CEA Cognitive Ergonomics & Mental Workload 3

Question 1

Cognitive tunneling (attentional tunneling) in high-demand work environments is characterized by:

Accepted Answer

Excessive focus on one information source while critical information from other sources is ignored

Answer

A medical condition resulting from prolonged work in confined spaces

Answer

Tunnel-shaped visual field defects caused by extended computer display use

Answer

A structured attention management strategy used in air traffic control

Question 2

A 'mental model' in cognitive ergonomics is best defined as:

Accepted Answer

A person's internal representation of how a system works, which guides their interaction and predictions

Answer

A physical ergonomic measurement tool used during workstation assessments

Answer

A software application for simulating workstation and equipment design

Answer

A regulatory framework specifying cognitive requirements for safety-critical roles

Question 3

Which display design principle most effectively reduces cognitive load by aligning interface layout with operator expectations?

Accepted Answer

Compatibility—designing displays to match the user's mental model of the system

Answer

Information density maximization to present all relevant data on one screen

Answer

Exclusive use of numeric alphanumeric data without graphical elements

Answer

Elimination of all color coding to reduce visual complexity

Question 4

Dual-task interference in cognitive ergonomics refers to:

Accepted Answer

Performance degradation that occurs when two concurrent tasks compete for the same limited cognitive resources

Answer

A conflict between two workers assigned to perform the same job simultaneously

Answer

Equipment malfunction that occurs when two machines operate in parallel

Answer

A scheduling conflict arising from overlapping shift assignments

Question 5

Which cognitive work analysis method involves workers verbalizing their thought processes in real time during task performance?

Accepted Answer

Think-aloud protocol (verbal protocol analysis)

Answer

Job Hazard Analysis (JHA)

Answer

Rapid Upper Limb Assessment (RULA)

Answer

Hierarchical Task Analysis (HTA) observation alone

Question 6

In safety-critical operations, limiting consecutive shift length primarily targets which cognitive hazard?

Accepted Answer

Cumulative mental fatigue and the associated increase in cognitive error rates

Answer

Physical strain injuries from prolonged static postures at workstations

Answer

Chemical overexposure during extended production runs

Answer

Overtime wage obligations under applicable labor regulations

Question 7

Alarm rationalization is an ergonomic intervention for control room operators that primarily reduces:

Accepted Answer

Cognitive overload caused by excessive nuisance alarms that desensitize operators to critical alerts

Answer

Physical fatigue from manual alarm acknowledgment procedures

Answer

Noise-induced hearing loss from auditory alarm systems

Answer

Lighting-related visual fatigue from flashing alarm indicators