OBJECTIVE ASSESSMENT PREPARATION
WGU D654
Prototyping and Iterating I
Objective Assessment Practice - Version 2
150 completely new scenario-based questions
Version 2 uses new contexts, distractors, evidence exhibits, and decision signals across usability-study
planning and conduct, measures, mockup iteration, visual design, psychology, heuristics, accessibility,
collaboration, and continuous improvement.
Course Edition Content
D654 / DES CUs Version 2 - September 2026 150 new questions, 6 vector exhibits, answer key,
detailed rationales
Independent practice notice
This PDF is an independent educational resource. It is not produced, endorsed, approved, or supplied by Western Governors
University. It contains no recalled, copied, confidential, or represented-as-live assessment items. WGU's public materials
define the course scope but do not publish a public item-by-item OA blueprint, exact weighting, cut score, time limit, or live
question bank. The 150-item allocation and suggested practice timing are study-design choices, not official WGU
specifications.
Research cutoff: September 2, 2026
,WGU D654 - OBJECTIVE ASSESSMENT PRACTICE V2 150 ORIGINAL ITEMS | SEPTEMBER 2026
How to Use This Practice Exam
Choose the single best answer for each item. Version 2 is deliberately more scenario-driven
than Version 1: identify the research goal, user context, evidence quality, risk, and next
decision before comparing options. Complete the question book first, then use the answer and
rationale section to diagnose concepts rather than memorize answer letters.
Mode Suggested use Important boundary
Mastery mode Complete one 25-question section without notes; review Best for repairing weak domains.
every rationale after scoring.
Timed practice Complete three self-selected 50-question blocks under Timing is practice guidance, not an official
consistent conditions. WGU duration.
Comparison mode Compare V1 and V2 by principle, not by answer letter; Do not treat either set as recalled or live
explain why each distractor is weaker. WGU content.
Single-best-answer rule
When two choices sound helpful, prefer the one that directly answers the stated decision, uses representative
evidence, protects participants, avoids leading behavior, preserves traceability, and supports a focused
retest.
Version 2 Blueprint
Part Practice emphasis Items Allocation
Section 1 UX Foundations, Prototypes, and Evaluation Methods 25 16.7%
Section 2 Study Planning, Participants, Ethics, and Task Design 25 16.7%
Section 3 Facilitation, Measures, and Data Quality 25 16.7%
Section 4 Synthesis, Prioritization, and Evidence-Driven Iteration 25 16.7%
Section 5 Visual Design, Psychology, Gestalt, and Heuristics 25 16.7%
Section 6 Accessibility, Collaboration, and Integrated Decisions 25 16.7%
Total Comprehensive public-scope practice 150 100%
Allocation and alignment note
The equal section allocation is a study-design choice, not an official WGU weight. The September 2026 public
course description supports practice across study planning and conduct, mockup iteration, visual design,
collaboration, and continuous improvement.
Independent competency-aligned preparation resource Page 2
,WGU D654 - OBJECTIVE ASSESSMENT PRACTICE V2 150 ORIGINAL ITEMS | SEPTEMBER 2026
Public Scope Alignment
Verified public emphasis Where assessed in V2
Plan a usability study Sections 1-2: research questions, methods, participants, consent, tasks, pilot, and
conditions
Conduct a usability study Sections 2-3: neutral facilitation, think-aloud, rescue rules, observations, privacy,
and data quality
Iterate a mockup Sections 1 and 4: fidelity choice, synthesis, severity, traceable change, regression,
and retesting
Apply visual-design principles Section 5 plus original exhibits: hierarchy, scale, balance, contrast, Gestalt,
typography, psychology, and heuristics
Collaborate and improve continuously Section 6: critique, accessibility, inclusive evidence, handoff, governance, and
closed-loop decisions
Independent competency-aligned preparation resource Page 3
, WGU D654 - OBJECTIVE ASSESSMENT PRACTICE V2 150 ORIGINAL ITEMS | SEPTEMBER 2026
Table of Contents
How to Use This Practice Exam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Version 2 Blueprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Public Scope Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
UX Foundations, Prototypes, and Evaluation Methods . . . . . . . . . . . . . . . . . . . . . . 5
Study Planning, Participants, Ethics, and Task Design . . . . . . . . . . . . . . . . . . . . . . 9
Facilitation, Measures, and Data Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Synthesis, Prioritization, and Evidence-Driven Iteration . . . . . . . . . . . . . . . . . . . . 17
Visual Design, Psychology, Gestalt, and Heuristics . . . . . . . . . . . . . . . . . . . . . . . 21
Accessibility, Collaboration, and Integrated Decisions . . . . . . . . . . . . . . . . . . . . . 25
Answer Key and Scorecard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Section Scorecard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
UX Foundations, Prototypes, and Evaluation Methods . . . . . . . . . . . . . . . . . . . . . 31
Study Planning, Participants, Ethics, and Task Design . . . . . . . . . . . . . . . . . . . . . 33
Facilitation, Measures, and Data Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Synthesis, Prioritization, and Evidence-Driven Iteration . . . . . . . . . . . . . . . . . . . . 38
Visual Design, Psychology, Gestalt, and Heuristics . . . . . . . . . . . . . . . . . . . . . . . 40
Accessibility, Collaboration, and Integrated Decisions . . . . . . . . . . . . . . . . . . . . . 42
Research Alignment and References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Reference List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Final Integrity Note . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Independent competency-aligned preparation resource Page 4
WGU D654
Prototyping and Iterating I
Objective Assessment Practice - Version 2
150 completely new scenario-based questions
Version 2 uses new contexts, distractors, evidence exhibits, and decision signals across usability-study
planning and conduct, measures, mockup iteration, visual design, psychology, heuristics, accessibility,
collaboration, and continuous improvement.
Course Edition Content
D654 / DES CUs Version 2 - September 2026 150 new questions, 6 vector exhibits, answer key,
detailed rationales
Independent practice notice
This PDF is an independent educational resource. It is not produced, endorsed, approved, or supplied by Western Governors
University. It contains no recalled, copied, confidential, or represented-as-live assessment items. WGU's public materials
define the course scope but do not publish a public item-by-item OA blueprint, exact weighting, cut score, time limit, or live
question bank. The 150-item allocation and suggested practice timing are study-design choices, not official WGU
specifications.
Research cutoff: September 2, 2026
,WGU D654 - OBJECTIVE ASSESSMENT PRACTICE V2 150 ORIGINAL ITEMS | SEPTEMBER 2026
How to Use This Practice Exam
Choose the single best answer for each item. Version 2 is deliberately more scenario-driven
than Version 1: identify the research goal, user context, evidence quality, risk, and next
decision before comparing options. Complete the question book first, then use the answer and
rationale section to diagnose concepts rather than memorize answer letters.
Mode Suggested use Important boundary
Mastery mode Complete one 25-question section without notes; review Best for repairing weak domains.
every rationale after scoring.
Timed practice Complete three self-selected 50-question blocks under Timing is practice guidance, not an official
consistent conditions. WGU duration.
Comparison mode Compare V1 and V2 by principle, not by answer letter; Do not treat either set as recalled or live
explain why each distractor is weaker. WGU content.
Single-best-answer rule
When two choices sound helpful, prefer the one that directly answers the stated decision, uses representative
evidence, protects participants, avoids leading behavior, preserves traceability, and supports a focused
retest.
Version 2 Blueprint
Part Practice emphasis Items Allocation
Section 1 UX Foundations, Prototypes, and Evaluation Methods 25 16.7%
Section 2 Study Planning, Participants, Ethics, and Task Design 25 16.7%
Section 3 Facilitation, Measures, and Data Quality 25 16.7%
Section 4 Synthesis, Prioritization, and Evidence-Driven Iteration 25 16.7%
Section 5 Visual Design, Psychology, Gestalt, and Heuristics 25 16.7%
Section 6 Accessibility, Collaboration, and Integrated Decisions 25 16.7%
Total Comprehensive public-scope practice 150 100%
Allocation and alignment note
The equal section allocation is a study-design choice, not an official WGU weight. The September 2026 public
course description supports practice across study planning and conduct, mockup iteration, visual design,
collaboration, and continuous improvement.
Independent competency-aligned preparation resource Page 2
,WGU D654 - OBJECTIVE ASSESSMENT PRACTICE V2 150 ORIGINAL ITEMS | SEPTEMBER 2026
Public Scope Alignment
Verified public emphasis Where assessed in V2
Plan a usability study Sections 1-2: research questions, methods, participants, consent, tasks, pilot, and
conditions
Conduct a usability study Sections 2-3: neutral facilitation, think-aloud, rescue rules, observations, privacy,
and data quality
Iterate a mockup Sections 1 and 4: fidelity choice, synthesis, severity, traceable change, regression,
and retesting
Apply visual-design principles Section 5 plus original exhibits: hierarchy, scale, balance, contrast, Gestalt,
typography, psychology, and heuristics
Collaborate and improve continuously Section 6: critique, accessibility, inclusive evidence, handoff, governance, and
closed-loop decisions
Independent competency-aligned preparation resource Page 3
, WGU D654 - OBJECTIVE ASSESSMENT PRACTICE V2 150 ORIGINAL ITEMS | SEPTEMBER 2026
Table of Contents
How to Use This Practice Exam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Version 2 Blueprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Public Scope Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
UX Foundations, Prototypes, and Evaluation Methods . . . . . . . . . . . . . . . . . . . . . . 5
Study Planning, Participants, Ethics, and Task Design . . . . . . . . . . . . . . . . . . . . . . 9
Facilitation, Measures, and Data Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Synthesis, Prioritization, and Evidence-Driven Iteration . . . . . . . . . . . . . . . . . . . . 17
Visual Design, Psychology, Gestalt, and Heuristics . . . . . . . . . . . . . . . . . . . . . . . 21
Accessibility, Collaboration, and Integrated Decisions . . . . . . . . . . . . . . . . . . . . . 25
Answer Key and Scorecard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Section Scorecard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
UX Foundations, Prototypes, and Evaluation Methods . . . . . . . . . . . . . . . . . . . . . 31
Study Planning, Participants, Ethics, and Task Design . . . . . . . . . . . . . . . . . . . . . 33
Facilitation, Measures, and Data Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Synthesis, Prioritization, and Evidence-Driven Iteration . . . . . . . . . . . . . . . . . . . . 38
Visual Design, Psychology, Gestalt, and Heuristics . . . . . . . . . . . . . . . . . . . . . . . 40
Accessibility, Collaboration, and Integrated Decisions . . . . . . . . . . . . . . . . . . . . . 42
Research Alignment and References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Reference List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Final Integrity Note . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Independent competency-aligned preparation resource Page 4
