CPE CPE Cognitive Ergonomics & Mental Workload Questions and Answers 2

Question 1

In cognitive ergonomics, what is 'inattentional blindness'?

Accepted Answer

Failure to perceive an unexpected stimulus when attention is focused elsewhere

Answer

Inattentional blindness occurs when a person fails to notice an unexpected but clearly visible stimulus because their attention is fully occupied by another task.

Question 2

The Fitts' Law model in human-computer interaction predicts what?

Accepted Answer

Time to acquire a target as a function of distance and target size

Answer

Fitts' Law predicts that movement time to hit a target increases with distance and decreases with target size, expressed as ID = log2(2A/W).

Question 3

Which memory system holds information for only a few seconds without rehearsal?

Accepted Answer

Working memory (short-term memory)

Answer

Working memory (short-term memory) holds approximately 7±2 items for roughly 15–30 seconds without active rehearsal or encoding.

Question 4

Error-tolerant design in cognitive ergonomics refers to systems that:

Accepted Answer

Allow users to detect, recover from, or undo errors without catastrophic consequences

Answer

Error-tolerant design assumes errors will occur and builds in mechanisms for detection, reversal, and recovery to minimize consequences.

Question 5

What is the primary goal of compatible display-control relationships in ergonomics?

Accepted Answer

Align the spatial or conceptual relationship between controls and their corresponding displays

Answer

Compatible display-control relationships reduce reaction time and errors by matching the spatial or movement logic of controls with their display indicators.

(CPE) Certified Professional Ergonomist Practice Test

(CPE) Certified Professional Ergonomist Practice Test

CPE CPE Cognitive Ergonomics & Mental Workload Questions and Answers 2