Clinical Informatics Certification Usability & Human-Computer Interaction 3

Question 1

Which usability concept refers to the degree to which a design's appearance communicates how it should be used?

Accepted Answer

Affordance

Answer

Affordance describes perceived properties of an object that suggest how it can be used, such as a button that looks pressable.

Question 2

What does 'task analysis' in HCI primarily seek to understand?

Accepted Answer

The steps users take to complete goals within a system

Answer

Task analysis breaks down user workflows into sequential steps to identify cognitive demands, decision points, and potential design improvements.

Question 3

A physician must remember a patient's ID number from one screen to enter it on the next screen. Which Nielsen heuristic is violated?

Accepted Answer

Recognition rather than recall

Answer

Requiring users to recall information across screens violates recognition over recall; the system should keep relevant data visible or transfer it automatically.

Question 4

In a usability study, a 'within-subjects' design means:

Accepted Answer

All participants test all versions of the interface

Answer

In a within-subjects design, the same participants are exposed to all conditions, reducing variance due to individual differences.

Question 5

Which accessibility standard is most commonly referenced when designing EHRs for users with disabilities in the US?

Accepted Answer

WCAG 2.1

Answer

WCAG 2.1 (Web Content Accessibility Guidelines) provides the widely adopted criteria for making digital health interfaces accessible to users with disabilities.

Clinical Informatics Certification Practice Test

Clinical Informatics Certification Practice Test

Clinical Informatics Certification Usability & Human-Computer Interaction 3