EPPP Assessment and Diagnosis Practice Questions
Domain 5 of ASPPB’s EPPP Part 1 · 16% of the exam, about 28 of the 175 scored questions
225 questions across all eight domains in 4 hours 15 minutes, with a score for Assessment and Diagnosis so you know where you stand.
Free Assessment and Diagnosis drillA 45-year-old with no anxiety history has his first "panic attacks" after starting high doses of an over-the-counter decongestant and drinking eight cups of coffee a day. The first step is to consider:
Assessment and Diagnosis on the EPPP
Assessment and diagnosis is Domain 5 of ASPPB’s specifications and 16% of the exam, about 28 of the 175 scored questions, tied with ethics as the largest domain. It has the most knowledge statements (KN29-KN41), from psychometric theory to the classification systems used for diagnosis.
- Share of the exam
- 16% in ASPPB’s Part 1 specifications (KN29–KN41), about 28 of the 175 scored questions
- Our drill
- 10 questions from 90 Assessment and Diagnosis questions, untimed, an explanation after every answer; one free attempt, unlimited with a pass

What assessment and diagnosis questions test
- Psychometrics: classical test theory, item response theory, reliability, validity, standard error, sensitivity, specificity and test bias (KN29)
- Assessment methods and instruments: interviews, self-report, observation, intelligence, achievement, personality and neuropsychological tests (KN30-KN32)
- Differential diagnosis and the use of medical and other non-psychological information (KN33)
- Organizational and program assessment: job analysis, personnel selection, needs assessment (KN34)
- Fair and accurate interpretation: cultural adaptation, base rates, decision heuristics, epidemiology, theories of psychopathology and measurement of change (KN35-KN41)
Sit the full exam under the real clock
225 questions across all eight domains in 4 hours 15 minutes, with a score for Assessment and Diagnosis so you know where you stand.
Free Assessment and Diagnosis drillHow to study it
- Practice the numbers: standard error of measurement, confidence bands around a score, and converting between z, T, IQ and percentile scores.
- Learn the validity types and the evidence for each (content, criterion-related, convergent and discriminant).
- For diagnosis questions, find the feature that separates the two most likely diagnoses (duration, onset, cause or context).
- Take the assessment drill more than once; it is tied for the largest domain.
Common questions
How many assessment questions are on the EPPP?
Assessment and diagnosis is 16% of EPPP Part 1 in ASPPB’s specifications, about 28 of the 175 scored questions, tied with ethics as the largest domain.
Does the EPPP test the DSM?
ASPPB’s KN36 covers classification systems, their rationales and limits, and dimensional versus categorical diagnosis, and KN33 covers differential diagnosis. Our questions refer to current diagnostic categories by name and in our own words; they do not reproduce diagnostic criteria text.
225 questions across all eight domains in 4 hours 15 minutes, with a score for Assessment and Diagnosis so you know where you stand.
Free Assessment and Diagnosis drillThe other EPPP domains
- Biological Bases of Behavior
- Cognitive-Affective Bases of Behavior
- Social and Cultural Bases of Behavior
- Growth and Lifespan Development
- Treatment, Intervention, Prevention and Supervision
- Research Methods and Statistics
- Ethical, Legal and Professional Issues
- EPPP practice exam (225 questions, 4 hours 15 minutes)
- Mixed drill: all eight domains
- EPPP practice test: exam facts and every domain
Sources
- ASPPB: EPPP Candidate Handbook, January 2026 (PDF)
- ASPPB: Current EPPP content areas, domains and weights
- ASPPB: Examination for Professional Practice in Psychology (EPPP)
- ASPPB: EPPP exam types (Part 1 and Part 2)
- ASPPB: EPPP registration fees
- ASPPB: EPPP sample exams
- ASPPB: Future EPPP content areas (integrated EPPP, fall 2027)
- ASPPB: Updates on the EPPP for 2028
- ASPPB: 2025 Psychology Licensing Exam Scores by Doctoral Program (PDF)
- APA: Ethical Principles of Psychologists and Code of Conduct
Original practice questions for exam preparation, written to ASPPB’s EPPP (Part 1-Knowledge) content areas; they are not ASPPB questions. Independent practice, not affiliated with or endorsed by the Association of State and Provincial Psychology Boards (ASPPB) or the American Psychological Association. EPPP is a registered mark of ASPPB.