Evidence-Based Design Accreditation and Certification (EDAC) — Questions and Answers

Question 1: Which design feature is most supported by evidence for reducing healthcare-associated infections (HAIs)?

Recirculated air systems without HEPA filtration
Hands-free handwashing sinks at the point of care (Correct answer)
Shared patient bathrooms between adjacent rooms
Carpeted flooring in patient corridors

Correct answer: Hands-free handwashing sinks at the point of care

Placing hands-free sinks at the point of care increases hand hygiene compliance, which is the most effective method of reducing HAIs.

Question 2: Which data collection method is classified as qualitative in EBD research?

Patient fall counts
Focus group interviews (Correct answer)
Infection rate tracking
Survey Likert scale scores

Correct answer: Focus group interviews

Focus group interviews capture subjective experiences and opinions, making them a qualitative method.

Question 3: In EBD, 'patient-controlled environments' refer to:

Rooms in which patients can lock doors for privacy at will
Systems that let patients adjust lighting, temperature, and entertainment from the bedside (Correct answer)
Clinical protocols developed with patient input
Facilities where patients self-manage their treatment plans

Correct answer: Systems that let patients adjust lighting, temperature, and entertainment from the bedside

Patient-controlled room systems allow patients to personalize their physical environment, which reduces anxiety and improves satisfaction.

Question 4: In EBD research ethics, informed consent requires that participants:

Voluntarily agree to participate after receiving complete information about the study (Correct answer)
Have a minimum education level to understand the study
Sign a waiver releasing the researcher from all liability
Be compensated financially for their involvement

Correct answer: Voluntarily agree to participate after receiving complete information about the study

Informed consent means participants voluntarily choose to participate with full understanding of risks, benefits, and their right to withdraw.

Question 5: What is a key characteristic of a quasi-experimental design in healthcare design research?

Lacks random assignment but still manipulates an independent variable (Correct answer)
Requires a double-blind protocol
Uses only qualitative interviews
Relies solely on expert panels

Correct answer: Lacks random assignment but still manipulates an independent variable

Quasi-experimental designs manipulate a variable but cannot randomly assign participants, making them useful when randomization is impractical.

Question 6: A researcher on the project team wants to make sure that a new observation tool they developed has a high degree of reliability. How should the researcher ensure the observation tool is reliable?

Have several researchers use the tool within a specified time frame and place, with the same subjects, and see if similar results are achieved. (Correct answer)
Submit the tool to the Institutional Review Board (IRB) for review.
Test the tool in a variety of settings both within and outside the hospital.
Ask a team of researchers to validate that the tool is measuring what its supposed to measure.

Correct answer: Have several researchers use the tool within a specified time frame and place, with the same subjects, and see if similar results are achieved.

Reliability in research refers to the consistency of a measurement tool. To ensure an observation tool is reliable, multiple researchers should use it under identical conditions—observing the same subjects, in the same place, within a specified time frame. If their independent observations yield similar results, it demonstrates that the tool consistently measures what it's intended to, thus proving its reliability.

Question 7: A post-occupancy evaluation (POE) in EBD is best described as:

A structural inspection of a completed facility
A pre-design survey of future users
A cost-benefit analysis conducted before construction
A systematic assessment of a building's performance after occupants have moved in (Correct answer)

Correct answer: A systematic assessment of a building's performance after occupants have moved in

POEs gather data on how well a completed building meets user needs and performance goals after occupancy.

Question 8: In evidence-based design, 'wayfinding' primarily addresses:

The flow of medical supplies from loading dock to units
How patients, visitors, and staff navigate through a healthcare facility (Correct answer)
Regulatory evacuation routes required by fire codes
The structural pathways for utility systems within walls

Correct answer: How patients, visitors, and staff navigate through a healthcare facility

Wayfinding encompasses all environmental cues — signage, landmarks, layout — that help people orient and navigate a healthcare facility.

Question 9: The Pebble Project, relevant to EDAC candidates, is best described as:

A federal grant program funding evidence-based hospital construction
A research coalition of healthcare organizations sharing data on design's impact on outcomes (Correct answer)
A database of peer-reviewed articles on facility management
A certification body for healthcare interior designers

Correct answer: A research coalition of healthcare organizations sharing data on design's impact on outcomes

The Pebble Project is a CHD initiative where member healthcare organizations conduct and share research on how design affects clinical and operational outcomes.

Question 10: Which environmental psychology principle explains why music in healthcare waiting areas can reduce perceived wait times?

Rhythm synchronizes cortisol cycles to a therapeutic tempo
Music masks conversation noise, reducing overheard stressful content
Positive distraction fills attentional capacity, making time feel shorter (Correct answer)
Music signals high-quality care, setting positive expectations

Correct answer: Positive distraction fills attentional capacity, making time feel shorter

Positive distractions — music, art, nature views — occupy attention and reduce the subjective experience of wait duration.

Question 11: In EBD, which body of knowledge is considered 'grey literature'?

Historical design archives from pre-evidence-based eras
Patient satisfaction data collected informally by nursing staff
Architectural drawings and specification documents
Reports, white papers, and case studies not published in peer-reviewed journals (Correct answer)

Correct answer: Reports, white papers, and case studies not published in peer-reviewed journals

Grey literature includes research reports, government publications, and industry white papers that have value but lack formal peer-review validation.

Question 12: Which sampling method ensures every member of the population has an equal chance of selection?

Convenience sampling
Purposive sampling
Simple random sampling (Correct answer)
Snowball sampling

Correct answer: Simple random sampling

Simple random sampling gives every individual an equal probability of inclusion, reducing selection bias.

Question 13: According to EBD principles, why are curved rather than angular corridors sometimes preferred in psychiatric and dementia units?

Angular corridors create shadows that confuse disoriented patients
Curved pathways feel less institutional, reduce aggression, and encourage wandering-safe movement (Correct answer)
Curved corridors reduce construction costs by eliminating corner framing
Curves are required by ADA standards for mobility device turning radius

Correct answer: Curved pathways feel less institutional, reduce aggression, and encourage wandering-safe movement

In psychiatric and dementia design, curved corridors reduce dead-ends and create more homelike, less institutional aesthetics that lower patient agitation.

Question 14: In the early phases of the project, when the scope of the project has been reviewed and the team is developing the estimated budget, what should be documented to justify evidence-based design features?

Strategic goals
Business case (Correct answer)
Research methodology
Master plan

Correct answer: Business case

In the early phases of an evidence-based design project, when the budget is being developed, a robust business case is essential. This document justifies the inclusion of specific evidence-based design features by outlining their anticipated benefits, such as improved patient outcomes or operational efficiencies, and their expected return on investment. The business case helps secure funding and aligns design decisions with strategic goals.

Question 15: Why is it important for the project team members to investigate confounding variables before reporting results?

Findings may contradict previous research.
Findings may not be readily applicable to new design projects.
Findings may have been influences by other factors. (Correct answer)
Findings may falsely support or reject the initial hypothesis.

Correct answer: Findings may have been influences by other factors.

Confounding variables are extraneous factors that can influence both the independent and dependent variables in a study, potentially distorting the true relationship between them. It is crucial for project teams to investigate these variables before reporting results because their unacknowledged presence can lead to inaccurate conclusions. If not accounted for, confounding variables might falsely suggest a cause-and-effect relationship or obscure a real one, compromising the validity and reliability of the research findings.

Question 16: What is 'environmental stressor theory' as it relates to healthcare facility design?

OSHA standards for workplace ergonomics in clinical settings
The concept that physical features like noise, crowding, and poor lighting compound patient physiological stress (Correct answer)
A theory about how cleaning chemicals affect indoor air quality
A model that categorizes hazardous materials found in healthcare environments

Correct answer: The concept that physical features like noise, crowding, and poor lighting compound patient physiological stress

Environmental stressor theory holds that negative physical environmental features activate the body's stress response, worsening health outcomes.

Question 17: A researcher calculates a p-value of 0.03 for a design intervention study. This means:

The design intervention improved outcomes by 3%
There is a 3% probability that the result occurred by chance alone (Correct answer)
Only 3% of participants benefited from the intervention
The study has a 3% error rate in data collection

Correct answer: There is a 3% probability that the result occurred by chance alone

A p-value of 0.03 indicates only a 3% probability that the observed result occurred by random chance, suggesting statistical significance.

Question 18: Which concept describes designing patient rooms that can serve multiple levels of acuity without patient transfers?

Acuity-adaptable room design (Correct answer)
Pod-based nursing unit
Universal room design
Flexible bay configuration

Correct answer: Acuity-adaptable room design

Acuity-adaptable rooms are equipped to handle varying care intensities, eliminating transfers that disrupt care and increase fall risk.

Question 19: Which term describes the degree to which a study's findings can be applied to real-world healthcare settings?

Construct validity
External validity (Correct answer)
Internal validity
Reliability

Correct answer: External validity

External validity refers to the generalizability of research findings beyond the specific study context.

Question 20: In EBD, standardized room design refers to:

Meeting minimum code requirements uniformly in every room
Using the same brand of furniture across all rooms
Applying a single design template across all hospital departments
Identical room layouts across a unit to reduce staff errors from unfamiliar environments (Correct answer)

Correct answer: Identical room layouts across a unit to reduce staff errors from unfamiliar environments

Standardized room layouts allow staff to locate equipment and supplies quickly regardless of which room they are working in, reducing errors.

Question 21: What does EBD research indicate about the effect of crowding on patient stress in emergency departments?

Patients prefer visible crowding as it signals a reputable facility
Crowding has little effect on patient stress if wait times are clearly communicated
ED crowding only affects staff stress, not patient-reported experience
Perceived crowding significantly increases patient anxiety and dissatisfaction (Correct answer)

Correct answer: Perceived crowding significantly increases patient anxiety and dissatisfaction

Dense, crowded environments trigger threat responses; evidence shows that perceived crowding in EDs elevates patient cortisol and lowers satisfaction scores.

Question 22: The 'triple bottom line' in healthcare EBD refers to measuring outcomes across which three domains?

Architectural aesthetics, functional efficiency, and maintenance cost
Environmental sustainability, occupant safety, and regulatory compliance
Patient outcomes, staff outcomes, and organizational/financial outcomes (Correct answer)
Design quality, construction cost, and schedule adherence

Correct answer: Patient outcomes, staff outcomes, and organizational/financial outcomes

The triple bottom line in EBD frames outcomes as improvements to patients, staff, and the organization simultaneously, not just one group.

Question 23: A study assessing the impact of acoustic design improvements in a neonatal intensive care unit (NICU) would most likely measure which set of outcomes?

Parent satisfaction with hospital billing and financial counseling services
Staff recruitment rates and voluntary turnover percentages
Number of daily clinical procedures performed per nurse
Infant weight gain, stress hormone levels, and length of stay (Correct answer)

Correct answer: Infant weight gain, stress hormone levels, and length of stay

NICU acoustic research focuses on infant physiological responses—weight gain, cortisol and epinephrine levels, and length of stay—because premature infants are highly sensitive to auditory stress.

Question 24: What is one of the BEST ways an evidence-based design process improves the typical project delivery approach?

It includes the needs and perspectives of key stakeholders. (Correct answer)
It separates capital and operating costs.
It reduces the need for value engineering.
It requires that more time be spent in the design phase.

Correct answer: It includes the needs and perspectives of key stakeholders.

The evidence-based design process significantly improves traditional project delivery by actively involving key stakeholders, such as staff, patients, and families. By including their needs and perspectives from the outset, the design solutions are more likely to address real-world challenges and foster a sense of ownership. This inclusive approach leads to designs that are more effective, user-centered, and gain crucial buy-in.

Question 25: A project team is interested in reducing patient falls and increasing staff satisfaction on an existing inpatient unit. There are a variety of design changes that could be made to achieve these goals. These include the installation of a non-slip type of flooring, a decentralized nurse station layout, and handrails in the patient room. Given the limited budget, what should the project team do FIRST to determine where to invest its limited resources?

Select the design feature that is most in line with the evidence-based design goals.
Conduct a critical review of the existing research for each option. (Correct answer)
Mock-up a patient room that includes the proposed design features.
Review data to determine the cost of patient falls and complete a business case.

Correct answer: Conduct a critical review of the existing research for each option.

Given a limited budget and multiple design options, the project team should first conduct a critical review of existing research for each proposed intervention. This step is fundamental to evidence-based design, as it helps identify which design features have the strongest empirical support for achieving desired outcomes like reducing patient falls or increasing staff satisfaction. This allows for informed resource allocation to the most effective solutions.

Question 26: The four-step EBD process recommended by the Center for Health Design begins with which step?

Select design features
Measure and share outcomes
Conduct a post-occupancy evaluation
Define evidence-based goals (Correct answer)

Correct answer: Define evidence-based goals

The CHD four-step EBD process begins with defining goals so that research, design decisions, and outcome measurement all remain aligned.

Question 27: Which research design is considered the gold standard in evidence-based design studies?

Case study
Randomized controlled trial (Correct answer)
Expert opinion
Anecdotal report

Correct answer: Randomized controlled trial

Randomized controlled trials are the gold standard because they minimize bias through random assignment of participants to conditions.

Question 28: Research by Roger Ulrich on healthcare environments most famously demonstrated that:

Open-plan wards reduce patient loneliness better than private rooms
Artwork of human faces accelerates patient recovery
Blue color schemes in patient rooms measurably lower blood pressure
Patients with window views of trees had shorter stays and less pain medication use than those facing a wall (Correct answer)

Correct answer: Patients with window views of trees had shorter stays and less pain medication use than those facing a wall

Ulrich's 1984 study found surgical patients with nature views recovered faster and needed less analgesia, establishing a cornerstone of EBD.

Question 29: Which HCAHPS survey domain directly measures a patient-reported outcome linked to acoustic design quality in hospitals?

Care Transition Readiness
Discharge Information Clarity
Communication About Medicines
Quietness of the Hospital Environment (Correct answer)

Correct answer: Quietness of the Hospital Environment

The HCAHPS 'Quietness of Hospital Environment' domain captures patient-reported noise perception and is tied to value-based purchasing reimbursement, making acoustic design a financial as well as clinical priority.

Question 30: Which communication system design approach is most consistent with evidence-based acoustic principles for reducing corridor noise in inpatient units?

Using corridor-mounted speakers at lower volumes throughout the unit
Increasing the number of overhead speakers to distribute sound more evenly
Implementing decentralized nurse call with visual and mobile alert systems (Correct answer)
Installing a more powerful overhead paging system for greater coverage

Correct answer: Implementing decentralized nurse call with visual and mobile alert systems

Decentralized nurse call systems with visual or mobile alerts reduce reliance on overhead paging, one of the most significant sources of disruptive noise in inpatient units.

Question 31: How does single-patient room design compare to multi-bed ward design regarding acoustic outcomes for patients?

Multi-bed wards enable better acoustic monitoring of multiple patients simultaneously
Single-patient rooms provide better acoustic privacy and measurably lower noise exposure (Correct answer)
Multi-bed wards achieve lower noise because multiple patients absorb sound energy
The two configurations show no statistically significant acoustic difference in studies

Correct answer: Single-patient rooms provide better acoustic privacy and measurably lower noise exposure

Physical walls in single-patient rooms block sound transmission and limit noise sources per room, resulting in lower measured noise levels and better acoustic privacy than open multi-bed wards.

Question 32: In EBD, 'translational research' refers to:

Applying laboratory or academic research findings to real-world design practice (Correct answer)
Moving research data from paper records to digital systems
Converting qualitative findings into quantitative metrics
Translating studies from foreign languages for US practice

Correct answer: Applying laboratory or academic research findings to real-world design practice

Translational research bridges the gap between scientific findings and their practical application in design decisions.

Question 33: Which psychological concept explains why patients feel less stressed when they can see the nursing station from their bed?

Environmental affordance signaling
Perceived control and social support visibility (Correct answer)
Territorial marking in institutional settings
Cognitive mapping of spatial layouts

Correct answer: Perceived control and social support visibility

Seeing staff nearby gives patients a sense that help is available, which reduces anxiety and increases perceived safety.

Question 34: What is the PRIMARY reason to review the project budget, estimated return on investment and the final design strategies developed during the design development phase?

To validate alignment with the projects evidence-based design goals. (Correct answer)
To gather and review baseline financial data to inform post-occupancy evaluations.
To identify the one-time, first cost for the new capital equipment.
To determine the cost to conduct research after the project is completed.

Correct answer: To validate alignment with the projects evidence-based design goals.

During the design development phase, reviewing the project budget, estimated return on investment, and final design strategies is crucial for validation. The primary reason for this review is to validate alignment with the project's overarching evidence-based design goals. This ensures that the design choices remain on track to achieve the desired outcomes and financial benefits identified at the project's outset.

Question 35: Evidence-based design most strongly supports which intervention to reduce patient delirium in ICUs?

Sedation protocols that minimize patient wakefulness
Reducing family visitation to lower patient stimulation
Removing clocks and calendars to reduce time anxiety
Access to natural light to maintain circadian rhythm and day-night orientation (Correct answer)

Correct answer: Access to natural light to maintain circadian rhythm and day-night orientation

Natural light cycles help ICU patients maintain circadian orientation, which is a key protective factor against delirium.

Question 36: What is the primary evidence-based rationale for incorporating private consultation rooms adjacent to patient areas in healthcare facility design?

Improving HVAC zoning to support airborne infection control protocols
Providing additional storage for large medical equipment and supply carts
Reducing background reverberation from medical imaging and diagnostic equipment
Ensuring speech privacy for sensitive patient-family discussions and HIPAA compliance (Correct answer)

Correct answer: Ensuring speech privacy for sensitive patient-family discussions and HIPAA compliance

Private consultation rooms provide enclosed spaces for sensitive conversations, protecting speech privacy and directly supporting HIPAA requirements for patient health information confidentiality.

Question 37: Which wall design strategy is most effective at preventing sound flanking between adjacent patient rooms?

Adding heavy curtains along the shared wall
Using glass partition walls with acoustic seals
Building walls that extend to the structural deck above the ceiling (Correct answer)
Installing sound-absorbing ceiling tiles on both sides

Correct answer: Building walls that extend to the structural deck above the ceiling

Walls extended to the structural deck close the flanking path above suspended ceilings, providing the highest level of sound isolation between adjacent spaces.

Question 38: How does patient room standardization improve safety outcomes in EBD practice?

Consistent layouts allow staff to locate equipment quickly, reducing errors from unfamiliarity (Correct answer)
Identical rooms ensure equal distribution of patients across units
Standardization lowers the cost of purchasing supplies in bulk
Standard rooms simplify regulatory inspections and accreditation surveys

Correct answer: Consistent layouts allow staff to locate equipment quickly, reducing errors from unfamiliarity

When rooms are identical, staff do not need to reorient in each room, reducing the cognitive errors that arise from variable layouts.

Question 39: During the design process, personnel participated in a visioning session to identify perceived problems and to develop design concepts. A literature review was conducted to see if credible evidence could be found to support the suggested improvements. The findings were discussed with the staff. What was the PRIMARY reason for doing this?

To make an informed decision. (Correct answer)
To encourage support and buy-in.
To meet union requirements.
To discuss existing workflow.

Correct answer: To make an informed decision.

The process of conducting visioning sessions, literature reviews, and staff discussions serves a primary purpose: to make informed decisions. By gathering input from personnel, reviewing credible evidence, and discussing findings, the project team ensures that design concepts are well-supported. This comprehensive approach leads to design choices that are based on both experiential knowledge and scientific research, resulting in better outcomes.

Question 40: What is the PRIMARY benefit to conducting post-occupancy research?

Gaining experiential design performance insights to inform future projects.
Testing the effects of design features on hypothesized outcomes. (Correct answer)
Having the ability to statistically analyze performance data.
Publicly marketing positive performance results of design features

Correct answer: Testing the effects of design features on hypothesized outcomes.

The primary benefit of conducting post-occupancy research (POE) is to empirically test whether the implemented design features actually achieved their hypothesized outcomes. POEs provide valuable, real-world data on how the built environment performs in use. This allows project teams to validate design decisions, understand their true impact on users and operations, and gain insights to inform future projects.

Question 41: In evidence-based design, 'positive distraction' is defined as:

Environmental features that draw attention away from pain, fear, or boredom in a pleasurable way (Correct answer)
Signage that redirects patients away from restricted clinical areas
Entertainment systems that improve patient satisfaction scores
Interactive displays used to distract patients during painful procedures

Correct answer: Environmental features that draw attention away from pain, fear, or boredom in a pleasurable way

Positive distractions — aquariums, nature murals, music — occupy patient attention in ways that reduce the subjective experience of pain and anxiety.

Question 42: What MUST the executive team of a community health center do to establish a project vision and goals and gain insight into how design strategies will work in a real-world setting?

Select and engage members of an interdisciplinary project team. (Correct answer)
Confirm the project scope with the board of directors.
Develop the project team structure and budget.
Establish expectations for the project and team members.

Correct answer: Select and engage members of an interdisciplinary project team.

To effectively establish a project vision, goals, and gain insights into design strategies, the executive team must first build a strong foundation. This involves selecting and engaging an interdisciplinary project team, bringing together diverse expertise from various departments and disciplines. This collaborative approach ensures a comprehensive understanding of needs and potential solutions, fostering a holistic design process.

Question 43: In evidence-based design, a 'hypothesis' is best described as:

A qualitative description of patient experience
A regulatory standard for healthcare facility design
A testable prediction about the relationship between a design element and an outcome (Correct answer)
A definitive conclusion drawn from completed research

Correct answer: A testable prediction about the relationship between a design element and an outcome

A hypothesis is a specific, testable prediction that guides how a design intervention will affect measurable outcomes.

Question 44: In ICU environments, which source has research most consistently identified as the dominant and most disruptive noise contributor?

Visitor conversations and family members
Medical equipment alarms and monitoring devices (Correct answer)
Patient television and entertainment systems
Administrative staff on telephone calls

Correct answer: Medical equipment alarms and monitoring devices

Medical equipment alarms—including ventilators, monitors, and infusion pumps—are consistently documented as the primary noise source in ICUs, affecting both patient sleep and staff stress.

Question 45: In EBD, a 'benchmark' is best described as:

A minimum code requirement for healthcare facility square footage
A reference point from existing research or high-performing facilities against which design outcomes are compared (Correct answer)
A standard specification for healthcare-grade building materials
A physical marking on a construction site indicating elevation

Correct answer: A reference point from existing research or high-performing facilities against which design outcomes are compared

Benchmarks in EBD provide comparative targets — drawn from research or peer facilities — allowing teams to assess whether a design intervention achieved meaningful improvement.

Question 46: What is the significance of 'translating evidence into design' in the EDAC process?

It bridges the gap between research findings and the actual architectural and design decisions made on a project (Correct answer)
It refers to adapting international design standards for US healthcare regulations
It describes the process of communicating design drawings to construction contractors
It involves converting metric measurements to imperial for US-based construction

Correct answer: It bridges the gap between research findings and the actual architectural and design decisions made on a project

Translation is the critical step where research insights are turned into specific, actionable design decisions with defined expected outcomes.

Question 47: According to EBD research, which design element most effectively reduces nurse medication errors?

Overhead display screens showing medication schedules
Medication scanning stations located in patient corridors
Dedicated, enclosed medication preparation rooms that minimize interruptions (Correct answer)
Larger medication carts with color-coded drawers

Correct answer: Dedicated, enclosed medication preparation rooms that minimize interruptions

Interruption during medication preparation is a leading cause of errors; dedicated rooms physically shield nurses from interruptions.

Question 48: There is an opportunity for transformational change during a new design and construction project. Who or what group is in the BEST position to drive the change in culture necessary to achieve the vision for the new facility?

Chief Operating Officer
Board of Directors (Correct answer)
Chief Executive Officer
Physicians and Nurses

Correct answer: Board of Directors

For transformational change within an organization, particularly in a new design and construction project, leadership from the highest level is paramount. The Board of Directors is in the best position to drive the necessary cultural shift and champion the vision for the new facility. Their strategic oversight and commitment ensure that evidence-based design principles are fully integrated and supported throughout the organization.

Question 49: According to evidence-based design research, how does decentralized nurse station placement affect unit noise levels compared to centralized stations?

Open centralized stations always produce lower noise levels by avoiding corridor foot traffic
Station placement has no measurable impact on unit sound levels in controlled studies
Centralized stations generate less noise because communication is consolidated in one area
Decentralized stations near patient rooms reduce the need for long-distance overhead paging, lowering noise (Correct answer)

Correct answer: Decentralized stations near patient rooms reduce the need for long-distance overhead paging, lowering noise

Decentralized nursing stations placed closer to patient rooms reduce the need for overhead paging and loud cross-unit communication, resulting in measurably lower ambient noise levels.

Question 50: What is 'alarm fatigue' and why is it relevant to acoustic design in healthcare?

Technical degradation of alarm systems from constant activation cycles
Gradual hearing loss in staff from repeated alarm exposure over a career
Desensitization of clinicians to alarms due to excessive frequency, risking missed critical alerts (Correct answer)
Patient anxiety disorder triggered by the sound of medical alarms

Correct answer: Desensitization of clinicians to alarms due to excessive frequency, risking missed critical alerts

Alarm fatigue is a patient safety phenomenon where staff become desensitized to the overwhelming volume of alarms, potentially delaying responses to life-threatening events; acoustic design can reduce nuisance alarm propagation.

Question 51: Which patient outcome is most strongly and directly improved by reducing hospital noise levels?

Medication adherence post-discharge
Surgical complication rates
Wound healing rate
Sleep quality and duration (Correct answer)

Correct answer: Sleep quality and duration

Noise is the single most commonly cited disruptor of patient sleep in hospitals; reducing it directly improves sleep duration and quality.

Question 52: According to EBD, which patient population benefits most from individualized control of room lighting?

Patients in isolation who require ultraviolet sterilization cycles
Older adult patients who are more sensitive to light levels and glare (Correct answer)
Surgical patients who need bright lighting during post-op monitoring
Pediatric patients who require high light levels for play activities

Correct answer: Older adult patients who are more sensitive to light levels and glare

Older patients have increased sensitivity to glare and varied light needs; individualized control reduces discomfort and improves their sleep and orientation.

Question 53: As soon as the project scope is defined, which of the following should kick-off the research process?

Identify research questions (Correct answer)
Establish performance metrics
Conduct a literature review
Document a hypothesis

Correct answer: Identify research questions

As soon as the project scope is clearly defined, the research process in evidence-based design should commence by identifying specific research questions. These questions serve as the foundation for the entire inquiry, guiding the literature review, data collection, and analysis. They articulate precisely what the project team needs to learn to make informed, evidence-based design decisions.

Question 54: Which EBD-supported design intervention has the strongest evidence for improving patient sleep in hospitals?

Sound-absorbing materials combined with nighttime quiet protocols (Correct answer)
Continuous background music to mask disruptive sounds
Blacked-out window coverings to eliminate all light
Restricting all staff communication to written notes after 10 PM

Correct answer: Sound-absorbing materials combined with nighttime quiet protocols

Combining acoustic environmental design with behavioral quiet-at-night protocols produces the strongest evidence-based improvement in hospital sleep.

Question 55: In the EDAC framework, what does it mean to 'hypothesize outcomes'?

Forecasting patient volume following a facility renovation
Predicting regulatory approval timelines for a design submission
Making a testable prediction about how a specific design decision will affect a measurable result (Correct answer)
Estimating construction costs for proposed design features

Correct answer: Making a testable prediction about how a specific design decision will affect a measurable result

In EBD practice, hypothesizing outcomes means stating upfront, in measurable terms, what change in patient, staff, or organizational outcomes the design is expected to produce.

Question 56: According to World Health Organization guidelines, what is the recommended nighttime noise level in hospital patient rooms?

50 dB(A)
35 dB(A) (Correct answer)
40 dB(A)
45 dB(A)

Correct answer: 35 dB(A)

WHO guidelines recommend nighttime hospital patient room noise not exceed 35 dB(A) to protect patient sleep and support recovery.

Question 57: What does the Sound Transmission Class (STC) rating measure in healthcare design?

The speech intelligibility index of a room's acoustic environment
The sound absorption capability of a ceiling tile surface
The ability of a partition to reduce airborne sound transmission between spaces (Correct answer)
The background noise level generated by HVAC systems

Correct answer: The ability of a partition to reduce airborne sound transmission between spaces

STC rates how effectively walls, floors, and other assemblies block airborne sound transmission, guiding partition design between sensitive healthcare spaces.

Question 58: Which material property rating should designers prioritize when selecting ceiling tiles to reduce noise levels within a healthcare space?

Noise Reduction Coefficient (NRC) (Correct answer)
Sound Transmission Class (STC)
Ceiling Attenuation Class (CAC)
Impact Insulation Class (IIC)

Correct answer: Noise Reduction Coefficient (NRC)

The Noise Reduction Coefficient (NRC) rates how much sound energy a surface absorbs; higher NRC ceiling tiles reduce reverberant noise levels within a room.

Question 59: According to EBD research, family participation in patient care is best supported by which design feature?

Digital check-in kiosks enabling real-time family updates
Glass walls allowing family to observe care without entering
Family waiting rooms located on each floor near patient units
Sleeping accommodations and seating integrated within the patient room (Correct answer)

Correct answer: Sleeping accommodations and seating integrated within the patient room

When families can stay in the room and participate in care, patient stress decreases and care coordination improves.

Question 60: The EDAC credential is primarily targeted at which professional audience?

Healthcare architects, interior designers, facility managers, and administrators involved in design decisions (Correct answer)
Registered nurses seeking continuing education credits in environmental safety
Medical device manufacturers designing healthcare equipment
Healthcare IT professionals managing electronic health record systems

Correct answer: Healthcare architects, interior designers, facility managers, and administrators involved in design decisions

EDAC is designed for any professional involved in healthcare design decisions — including designers, administrators, and facility managers — not clinical staff.

Question 61: Historically, most healthcare organizations have thoughts of the physical buildings as a sunk costs. As a part of the evidence-based design process, and when developing the business case, what is they physical building viewed as?

a strategic investment (Correct answer)
a healing environment
a capital expense
A revenue center

Correct answer: a strategic investment

In the context of evidence-based design, physical buildings are increasingly viewed as strategic investments rather than mere sunk costs. This perspective highlights how thoughtful design can positively impact key organizational outcomes, such as patient safety, staff well-being, and operational efficiency. By linking design to measurable results, the building becomes a tool for achieving strategic goals and generating value.

Question 62: What does 'patient-centered care' mean in the context of EBD facility design?

Patients participate directly in architectural drawings
All facility spaces are physically centered around a patient lounge
Patient billing and administration are co-located with clinical spaces
Design decisions are driven by patient needs, preferences, and outcomes (Correct answer)

Correct answer: Design decisions are driven by patient needs, preferences, and outcomes

Patient-centered design prioritizes the patient's physical, emotional, and social needs as the primary driver of all design decisions.

Question 63: In the context of EBD, 'respite spaces' for staff are designed to:

Store personal protective equipment for rapid access
Serve as overflow patient holding areas during surge capacity
House medical equipment when not in active use
Provide areas where staff can decompress, reducing burnout and medical errors (Correct answer)

Correct answer: Provide areas where staff can decompress, reducing burnout and medical errors

Staff respite spaces give healthcare workers a place to physically and mentally recover, which evidence links to reduced fatigue and fewer errors.

Question 64: How does 'territoriality' affect patient behavior in shared healthcare rooms?

Patients in shared rooms demonstrate stronger therapy participation
Territorial behavior increases hand hygiene compliance in shared bathrooms
Patients claim shared spaces, improving social bonding with roommates
Patients in shared rooms experience reduced sense of personal space, increasing stress and reducing privacy-related compliance (Correct answer)

Correct answer: Patients in shared rooms experience reduced sense of personal space, increasing stress and reducing privacy-related compliance

Reduced personal territory in shared rooms increases psychological stress and can decrease medication and treatment compliance due to privacy concerns.

Question 65: In EBD research, what does a systematic review primarily accomplish?

Synthesizes findings from multiple studies on a specific question (Correct answer)
Describes a single facility's outcomes
Tests a single hypothesis in a controlled setting
Gathers expert opinions on design trends

Correct answer: Synthesizes findings from multiple studies on a specific question

A systematic review methodically identifies, evaluates, and synthesizes all relevant research on a focused question.

Question 66: What does 'confounding variable' mean in the context of EBD research?

A variable that correlates with both the independent and dependent variables, distorting results (Correct answer)
A variable intentionally manipulated by the researcher
The primary outcome being measured in a study
A standardized design element across all study sites

Correct answer: A variable that correlates with both the independent and dependent variables, distorting results

Confounding variables can create false associations between design interventions and outcomes if not controlled.

Question 67: The project team is advancing a collection of design options from the conceptual to schematic design phase. What should the project team do FIRST to prepare for the next phase?

Conduct a pilot study.
Prioritize areas that need further study. (Correct answer)
Update the business case.
Define the performance metrics.

Correct answer: Prioritize areas that need further study.

As a project transitions from conceptual to schematic design, the team needs to refine its focus and allocate resources effectively. The first step to prepare for the next phase is to prioritize which design options or areas require more detailed study and investigation. This ensures that efforts are concentrated on developing the most impactful and evidence-based solutions for the project.

Question 68: Which psychological phenomenon is relevant to understanding why high background noise levels impair staff concentration in busy nursing units?

The Placebo Effect
The Cocktail Party Effect (Correct answer)
The Hawthorne Effect
The Ringelmann Effect

Correct answer: The Cocktail Party Effect

The cocktail party effect describes the brain's ability to selectively focus on one sound amid competing noise; high noise loads overwhelm this mechanism, degrading concentration and increasing error risk.

Question 69: What is the core principle of 'biophilic design' as applied in evidence-based healthcare environments?

Designing facilities that use only biodegradable building materials
Using biological research labs as the basis for clinical floor plans
Creating living walls for air filtration in clinical corridors
Incorporating nature — light, plants, water, natural materials — to reduce human stress and support healing (Correct answer)

Correct answer: Incorporating nature — light, plants, water, natural materials — to reduce human stress and support healing

Biophilic design is grounded in humans' innate affinity for nature, and research shows nature elements in care environments reduce stress hormones and pain.

Question 70: A project team wants to make sure that the results of a patient satisfaction tool they developed within a healthcare setting have a high degree of external validity. What does external validity mean?

The tool generates results that are statistically significant.
The tool reliability measures what it is supposed to measure.
The tool results are generalizable to theoretical constructs.
The tool may be successfully used within other healthcare settings. (Correct answer)

Correct answer: The tool may be successfully used within other healthcare settings.

External validity refers to the extent to which the results of a study or the utility of a tool can be generalized to other populations, settings, or times. If a patient satisfaction tool developed within one healthcare setting has a high degree of external validity, it means its findings and effectiveness are likely applicable and transferable to other similar healthcare settings, making it broadly useful.

Question 71: Which metric is most commonly used to measure organizational outcomes in EBD studies of hospital design?

Number of LEED certification points earned
Physician credentialing approval timelines
Length of patient stay and operational cost per patient day (Correct answer)
Net promoter score from architect satisfaction surveys

Correct answer: Length of patient stay and operational cost per patient day

Length of stay and cost per patient day are the most quantifiable organizational metrics directly influenced by design and used in EBD literature.

Question 72: Which type of signage is most strongly supported by EBD for improving patient wayfinding?

Landmark-based cues combined with consistent color coding at decision points (Correct answer)
Audible paging announcements guiding visitors by name
Floor decals updated weekly based on current patient room assignments
Dense text directories near hospital entrances

Correct answer: Landmark-based cues combined with consistent color coding at decision points

Distinctive landmarks and color coding at decision points leverage natural cognitive wayfinding strategies better than text-heavy signs.

Question 73: Which color palette is most supported by EBD research for patient rooms to promote calm and reduce anxiety?

Pure white surfaces to communicate cleanliness
Bright primary colors to stimulate patient alertness
Soft blues, greens, and earth tones derived from nature (Correct answer)
Bold contrasting patterns to aid spatial orientation

Correct answer: Soft blues, greens, and earth tones derived from nature

Nature-inspired palettes of soft blues, greens, and earth tones consistently lower reported patient anxiety compared to institutional whites or bold colors.

Question 74: Which key outcome category is central to all EDAC research frameworks?

Regulatory compliance rates across facility types
Patient, staff, and organizational outcomes linked to the physical environment (Correct answer)
Physician satisfaction with procedure room layouts
Cost per square foot of evidence-based design features

Correct answer: Patient, staff, and organizational outcomes linked to the physical environment

EDAC frameworks focus on measuring how design affects patients, staff, and organizational performance as the three primary outcome domains.

Question 75: A large medical center developed a corporate strategy committed to safety and sustainability. One goal is to reduce patient falls and infections. The marketing department also wants to increase the medical center's market share. Prior to functional and space programming, what is the FIRST thing the team should do?

Conduct focus groups to determine needs.
Ensure alignment of the project vision & goals. (Correct answer)
Evaluate population demographics.
Establish outcomes measures.

Correct answer: Ensure alignment of the project vision & goals.

Before diving into functional and space programming, the absolute first step is to ensure a clear alignment of the project vision and goals with the overarching corporate strategy. A medical center's diverse goals, such as reducing patient falls, increasing market share, and promoting sustainability, can sometimes conflict or require prioritization. Establishing this alignment early ensures that all subsequent design decisions and programming efforts are cohesive, support the organization's strategic objectives, and prevent costly rework due to misdirected efforts.

Question 76: Which of the following best describes a 'before-after' study design in healthcare design research?

Reviewing published literature before and after a specific year
Measuring outcomes in the same facility before and after a design intervention (Correct answer)
Comparing two different hospitals simultaneously
Surveying staff preferences before construction begins

Correct answer: Measuring outcomes in the same facility before and after a design intervention

Before-after designs compare outcomes at the same site pre- and post-intervention to assess design impact.

Question 77: Which HCAHPS domain is most directly influenced by the physical environment of a healthcare facility?

Discharge information comprehensiveness
Physician communication clarity
Medication side-effect explanation
Quietness of the hospital environment at night (Correct answer)

Correct answer: Quietness of the hospital environment at night

The HCAHPS quietness domain measures patient perceptions of nighttime noise, which is directly controlled by the physical acoustic environment.

Question 78: When measuring or evaluating results, various methodologies can be used. Independently they may have limitations Which of the following described the use of multiple methods to strengthen the validity and reliability of the research project?

Correlation
Triangulation (Correct answer)
Qualitative research
Applied research

Correct answer: Triangulation

Triangulation is a research technique that involves using multiple methods, data sources, or theories to investigate the same phenomenon. This approach is vital because independent methodologies often have inherent limitations or biases. By combining different perspectives, triangulation strengthens the validity and reliability of research findings, providing a more comprehensive and robust understanding of the subject matter than any single method could achieve alone.

Question 79: When developing the preliminary research plan during conceptual design, what is the PRIMARY purpose for creating a hypothesis?

To evaluate the outcomes for the various design options.
To determine the appropriate research methodology.
To identify the baseline data that needs to be collected.
To establish a link between the design strategies and intended results. (Correct answer)

Correct answer: To establish a link between the design strategies and intended results.

The primary purpose of creating a hypothesis during the preliminary research plan in evidence-based design is to establish a clear, testable link between proposed design strategies and their intended results. A hypothesis articulates what the team expects to achieve through specific design interventions. This guides the research process and provides a framework for evaluating the effectiveness of the design solutions.

Question 80: When applying an evidence-based design process, why MUST the economic and social factors included in the Environment of Care (EOC) be considered when designing the physical environment?

They affect the development of the budget.
They exist concurrently and influence planning. (Correct answer)
They influence the results of the research.
They define baseline performance metrics.

Correct answer: They exist concurrently and influence planning.

In Evidence-Based Design (EBD), economic and social factors are integral to the Environment of Care (EOC) and must be considered because they are not isolated but rather operate simultaneously with the physical environment. These factors directly impact how people interact with and experience a space, influencing everything from patient satisfaction and staff efficiency to community engagement and financial viability. Therefore, integrating them into the design process ensures a holistic approach that addresses the complex interplay between human behavior, societal context, and the built environment.

Question 81: What does the term 'reverberation time' (RT60) describe in healthcare acoustic design?

The delay between a sound source and its first echo off a hard surface
The time required for sound to decay by 60 dB after the source stops (Correct answer)
The frequency range of intelligible human speech within a room
The time a sound system takes to reach full volume after activation

Correct answer: The time required for sound to decay by 60 dB after the source stops

RT60 is the time for sound pressure to decay by 60 decibels after the source ceases; longer reverberation impairs speech intelligibility and increases perceived noise levels.

Question 82: How does the concept of 'social support' factor into EBD as a design variable?

Spaces designed for family and peer interaction provide emotional resources that directly affect patient outcomes (Correct answer)
Social support is a staff management variable unrelated to facility design
Design for social support primarily targets physician-to-physician communication
Social areas are designed exclusively to improve visitor satisfaction scores

Correct answer: Spaces designed for family and peer interaction provide emotional resources that directly affect patient outcomes

Research shows that social support — enabled by family rooms, lounge spaces, and open visitation design — reduces patient anxiety and correlates with faster recovery.

Question 83: What is the EBD-supported benefit of providing family accommodation spaces within patient rooms?

Reduced nursing overtime by shifting care to family members
Improved patient outcomes through reduced stress and increased social support (Correct answer)
Increased patient room revenue through extended stays
Lower supply costs through family self-service

Correct answer: Improved patient outcomes through reduced stress and increased social support

Family presence and support have been shown to reduce patient anxiety, improve communication with care teams, and support faster recovery.

Question 84: Which evidence-based design strategy most directly reduces nurse burnout and staff turnover?

Increasing locker room storage capacity
Providing dedicated staff respite areas and reducing unnecessary walking distance (Correct answer)
Installing motivational signage in staff corridors
Placing staff break rooms adjacent to administrative offices

Correct answer: Providing dedicated staff respite areas and reducing unnecessary walking distance

Physical respite spaces and reduced physical demands through efficient layouts are linked to lower nurse fatigue, burnout, and turnover intent.

Question 85: Which of the following best defines 'evidence-based design' (EBD) in the context of the EDAC credential?

Following design guidelines issued by accreditation agencies
The process of making design decisions based on the best available research from credible studies (Correct answer)
Designing buildings in compliance with all current building codes and standards
Using computer-aided design software to model evidence-based construction materials

Correct answer: The process of making design decisions based on the best available research from credible studies

EBD is a structured process of grounding design decisions in the best available credible research to achieve measurable outcomes.

Question 86: Which hierarchy of evidence places which type of study at the highest level?

Cross-sectional surveys
Systematic reviews and meta-analyses of RCTs (Correct answer)
Expert opinion and editorials
Descriptive case reports

Correct answer: Systematic reviews and meta-analyses of RCTs

The evidence hierarchy places systematic reviews and meta-analyses of randomized controlled trials at the top because they synthesize the strongest primary evidence.

Question 87: Which of the following is a primary goal of 'healing environment' design in EBD?

Standardizing all room layouts to reduce construction variability
Reducing patient stress by incorporating nature, light, and social support spaces (Correct answer)
Minimizing window area to reduce HVAC loads
Maximizing the number of patient beds per square foot

Correct answer: Reducing patient stress by incorporating nature, light, and social support spaces

Healing environments are designed to reduce psychosocial stressors and support recovery through biophilic, social, and restorative design elements.

Question 88: How does 'legibility' of a healthcare facility floor plan affect patient psychology?

Legibility refers to the readability of signage fonts for patients with low vision
A legible layout reduces wayfinding stress by making the building easy to understand and navigate (Correct answer)
Legibility primarily benefits maintenance staff rather than patients or visitors
A legible plan increases perceived facility size, reducing feelings of confinement

Correct answer: A legible layout reduces wayfinding stress by making the building easy to understand and navigate

When the spatial logic of a building is intuitive, people can orient themselves without anxiety, reducing stress associated with getting lost.

Question 89: During the design development phase, the project team developed a number of proposed evidence-based design features. In support of their desire to conduct post-occupancy research, what MUST the team include in the hypotheses to properly evaluate their design features?

Baseline metrics
Primary research focus
Related references
Intended outcomes (Correct answer)

Correct answer: Intended outcomes

To properly evaluate evidence-based design features through post-occupancy research, hypotheses must clearly state the intended outcomes. A hypothesis serves as a testable prediction about the expected results of the design intervention, linking specific design features to measurable improvements. Without clearly defined intended outcomes, it becomes impossible to objectively assess whether the design achieved its goals, making the post-occupancy evaluation ineffective and unable to provide actionable insights.

Question 90: EBD evidence on patient privacy most commonly links private rooms to which clinical improvement?

Lower emergency department wait times
Faster surgical scheduling turnover
Improved radiology throughput
Reduced healthcare-associated infection rates (Correct answer)

Correct answer: Reduced healthcare-associated infection rates

Private rooms prevent cross-contamination between patients and allow proper isolation procedures, directly reducing HAI rates.

Question 91: Research has most consistently associated excessive hospital noise with which patient outcome?

Increased patient satisfaction with clinical staff responsiveness
Reduced dependence on sedative and analgesic medications
Disrupted sleep leading to slower recovery and longer lengths of stay (Correct answer)
Improved pain tolerance due to sensory adaptation over time

Correct answer: Disrupted sleep leading to slower recovery and longer lengths of stay

Multiple evidence-based design studies link hospital noise to disrupted patient sleep, which is associated with impaired immune function, heightened pain perception, and prolonged hospital stays.

Question 92: EBD research most strongly supports which flooring material for reducing noise in patient care areas?

Ceramic tile
Rubber or resilient flooring (Correct answer)
Polished concrete
Vinyl composition tile (VCT)

Correct answer: Rubber or resilient flooring

Rubber and resilient flooring absorb impact sound better than hard surfaces, reducing noise from footsteps and dropped objects.

Question 93: A meta-analysis in EBD research is most useful because it:

Offers expert consensus without raw data
Provides a detailed narrative of a single case
Replaces the need for primary research in practice
Combines statistical results from multiple studies to increase power and precision (Correct answer)

Correct answer: Combines statistical results from multiple studies to increase power and precision

Meta-analyses pool quantitative data from many studies, yielding more reliable estimates of an intervention's effect.

Question 94: Which positioning of handwashing sinks is most supported by EBD for maximizing compliance?

In the patient bathroom
Immediately inside the room entrance, visible upon entry (Correct answer)
In the corridor outside patient rooms
At the nursing station outside the room

Correct answer: Immediately inside the room entrance, visible upon entry

Sinks placed at the room entry are visible reminders and accessible to staff the moment they enter, proven to raise hand hygiene rates.

Question 95: How does natural light exposure in patient rooms most directly affect health outcomes according to EBD?

It primarily improves staff productivity rather than patient health
It regulates circadian rhythms, improving sleep quality and reducing length of stay (Correct answer)
It increases vitamin D levels to near therapeutic doses within one day
It eliminates the need for artificial lighting, reducing energy costs

Correct answer: It regulates circadian rhythms, improving sleep quality and reducing length of stay

Natural light synchronizes the body's circadian clock, improving sleep, reducing depression, and correlating with shorter hospital stays.

Question 96: In EBD, 'prospect and refuge' theory suggests that patients heal better in rooms that offer:

Neutral colors to minimize sensory stimulation
Wide views outward (prospect) combined with a sense of safe enclosure (refuge) (Correct answer)
Maximum open floor space for mobility
Complete visual privacy from staff and other patients

Correct answer: Wide views outward (prospect) combined with a sense of safe enclosure (refuge)

Prospect-and-refuge theory posits that humans prefer environments with broad outward views and protected backing, reducing vigilance and stress.

Question 97: An architectural firm is interested in conducting their own own-occupancy evaluation (POE) for a recently completed project. To increase the credibility the findings, what should the firm do first?

Ensure there is adequate time and funding.
Hire a third-party research to avoid bias. (Correct answer)
Conduct a pilot study to rest the research tools.
Determine which hypothesis to measure.

Correct answer: Hire a third-party research to avoid bias.

To enhance the credibility of findings from an owner-occupancy evaluation (POE), it is crucial to minimize bias. Hiring a third-party researcher ensures objectivity, as they have no vested interest in the project's outcome or the firm's reputation. This independent perspective strengthens the validity and trustworthiness of the evaluation results, making them more reliable for informing future decisions.

Question 98: Staff travel distance in a nursing unit is most directly linked to which patient safety outcome in EBD?

Medication dosing accuracy
Patient fall rates
Rate of healthcare-associated infections
Response time to patient calls and emergencies (Correct answer)

Correct answer: Response time to patient calls and emergencies

The longer nurses must walk to reach a patient, the slower response times to call lights and emergencies, which can worsen outcomes.

Question 99: Which flooring material is most commonly recommended in evidence-based healthcare design for balancing acoustic performance with infection control requirements?

Carpet for maximum sound absorption throughout the unit
Luxury vinyl tile (LVT) for impact noise reduction and cleanability (Correct answer)
Ceramic tile for moisture resistance and longevity
Polished concrete for durability and easy maintenance

Correct answer: Luxury vinyl tile (LVT) for impact noise reduction and cleanability

Luxury vinyl tile provides meaningful impact sound reduction, supports rigorous infection control cleaning protocols, and offers durability, making it the preferred acoustic-compliant flooring for healthcare.

Question 100: Which measure is most appropriate for assessing the reliability of an observational research instrument in EBD?

Content validity
Face validity
Predictive validity
Inter-rater reliability (Correct answer)

Correct answer: Inter-rater reliability

Inter-rater reliability measures the degree of agreement between different observers using the same instrument.

Question 101: What does the 'stress response model' (Ulrich, 1991) predict about healthcare environments?

Stressful environments motivate patients to recover faster to leave sooner
Staff emotional state is the dominant predictor of patient stress, not physical environment
Restorative environments activate parasympathetic responses that reduce stress and support immunity (Correct answer)
Medical technology overrides environmental stressors in determining outcomes

Correct answer: Restorative environments activate parasympathetic responses that reduce stress and support immunity

Ulrich's model posits that restorative environments — with nature, control, and social support — shift patients from sympathetic to parasympathetic dominance, accelerating healing.

Question 102: The concept of 'psychosocial support' in healthcare design refers to:

Counseling offices embedded within every patient care unit
Spaces and features that facilitate emotional support from family, staff, and peers (Correct answer)
Social media stations allowing patients to connect with the outside world
Psychological screening tools administered at patient admission

Correct answer: Spaces and features that facilitate emotional support from family, staff, and peers

Psychosocial support in design means creating spaces where emotional connections — family rooms, support group areas — are enabled by the environment.

Question 103: In the context of healthcare acoustic design, 'speech privacy' refers primarily to which of the following?

Acoustic clarity of overhead public address systems
The clarity of staff-to-staff communication over intercoms
Background noise levels in public waiting areas
Prevention of patient conversations from being understood by unintended listeners (Correct answer)

Correct answer: Prevention of patient conversations from being understood by unintended listeners

Speech privacy ensures that confidential patient conversations cannot be understood outside the intended space, supporting HIPAA compliance and patient dignity.

Question 104: What is the primary unit used to measure sound pressure levels in healthcare acoustic design?

Hertz (Hz)
Pascal (Pa)
Decibel (dB) (Correct answer)
Lumen (lm)

Correct answer: Decibel (dB)

Decibels (dB) measure sound pressure levels and are the standard unit referenced in acoustic performance criteria and healthcare design guidelines.

Question 105: Which primary design and construction reference standard includes specific acoustic performance requirements for healthcare facilities?

ADA Standards for Accessible Design
FGI Guidelines for Design and Construction of Health Care Facilities (Correct answer)
LEED v4 Healthcare Rating System
ASHRAE Standard 90.1

Correct answer: FGI Guidelines for Design and Construction of Health Care Facilities

The Facility Guidelines Institute (FGI) Guidelines are the primary reference for healthcare facility design and include specific acoustic criteria for various room types.

Question 106: EBD research on sensory overload in ICUs suggests that design should prioritize:

Installing multiple monitors at eye level so patients can track their own vitals
Brightening ICU environments to prevent patients from sleeping during the day
Reducing auditory and visual stimuli to levels that support rather than disrupt patient recovery (Correct answer)
Maximizing sensory input to prevent patient boredom during long ICU stays

Correct answer: Reducing auditory and visual stimuli to levels that support rather than disrupt patient recovery

ICU patients are acutely vulnerable to sensory overload from alarms, light, and activity; reducing excess stimuli supports recovery and reduces delirium.

Question 107: In evidence-based design research, improved acoustic conditions in healthcare facilities have been most consistently associated with which outcome for clinical staff?

Increased overtime hours due to improved productivity expectations
Higher rates of self-reported medication errors due to decreased vigilance
Reduced burnout, lower stress levels, and improved job satisfaction (Correct answer)
Increased reliance on electronic health records for documentation

Correct answer: Reduced burnout, lower stress levels, and improved job satisfaction

Research consistently associates quieter healthcare environments with reduced occupational stress, lower burnout rates, and improved staff satisfaction, which also supports retention and workforce stability.

Question 108: Which room configuration is most strongly supported by EBD evidence for reducing patient falls?

Open bay layouts with central nursing station monitoring
Multi-bed wards with shared bathrooms at the end of the hall
Double-occupancy rooms with curtain dividers
Acuity-adaptable single-patient rooms with bathroom near the bed (Correct answer)

Correct answer: Acuity-adaptable single-patient rooms with bathroom near the bed

Single-patient acuity-adaptable rooms with bathrooms positioned near the bed reduce the distance patients must travel, lowering fall risk.

Question 109: When EBD practitioners translate research into design decisions, what is the first recommended step?

Conduct a post-occupancy evaluation
Frame a clear question about the desired outcome (Correct answer)
Select the architectural features to implement
Submit a budget proposal

Correct answer: Frame a clear question about the desired outcome

Framing a clear, focused question ensures the research search and design decisions remain aligned with the intended outcome.

Question 110: Which term describes how consistently a measurement tool produces the same results under the same conditions?

Validity
Specificity
Reliability (Correct answer)
Sensitivity

Correct answer: Reliability

Reliability is the consistency of a measurement instrument — it produces the same results when measuring the same thing repeatedly.

Evidence-Based Design Accreditation and Certification (EDAC)

The EDAC certification validates knowledge of evidence-based design principles for healthcare facilities, covering research methods, design processes, and the impact of built environments on patient outcomes and safety.

110

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120 min

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70%

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