5.1 Assessment Domain Orientation for EPPP Part 1
Key Takeaways
- Assessment and diagnosis is a Part 1-Knowledge domain and accounts for 16% of the current Part 1 blueprint.
- ASPPB describes the 2026 EPPP as a two-part exam, with Part 1 testing broad knowledge and Part 2 testing applied skills.
- Part 1 contains 225 total items, including 175 scored items and 50 unscored pretest items.
- Assessment items reward integration of psychometrics, interviewing, diagnosis, culture, ethics, and communication.
How Assessment and Diagnosis Fits the Current EPPP
Assessment and diagnosis is one of the eight EPPP Part 1-Knowledge domains. In the current ASPPB topic outline, this domain is weighted at 16% of Part 1, so it deserves the same seriousness as ethics and more attention than a small review topic. The domain is not just test names. It asks whether a candidate understands how data are gathered, evaluated, integrated, and communicated.
ASPPB describes the EPPP in 2026 as a two-part exam. Part 1-Knowledge assesses general knowledge of psychology, intervention, assessment, and foundational graduate training. Part 2-Skills assesses application of knowledge to decision-making in real-world independent practice situations. This chapter is written for Part 1 knowledge, but the same habits support Part 2 assessment and intervention scenarios.
Part 1 contains 225 total items, with 175 scored items and 50 unscored pretest items. The exam-item time for Part 1 is 4 hours 15 minutes. Those official facts matter because they frame how to study: learn stable principles, practice recognizing the best next assessment step, and do not build a strategy around guessing which items count.
The ASPPB score scale runs from 200 to 800. ASPPB recommends 500 for independent practice and 450 for supervised practice, while licensing authorities control licensure decisions and supervised-practice rules. For assessment content, that means candidates should reason from standards of practice rather than from a memorized score-conversion shortcut.
| Assessment task | What the exam is testing | Common error |
|---|---|---|
| Referral analysis | Clarify the question before selecting methods | Giving a test battery before knowing the decision needed |
| Interviewing | Gather history, symptoms, context, risk, and strengths | Treating self-report as complete by itself |
| Test selection | Match instruments to purpose, population, language, and norms | Choosing a familiar test without validity support |
| Diagnosis | Compare competing explanations and rule-outs | Listing symptoms without considering course and impairment |
| Communication | Report findings accurately and accessibly | Overstating certainty or ignoring limitations |
A competent assessment starts with the referral question. A custody evaluation, disability determination, diagnostic clarification, presurgical evaluation, school concern, and treatment intake all require different levels of evidence. The psychologist should identify the question, the intended user of the report, the examinee's rights, the foreseeable risks of error, and the level of confidence required.
Assessment knowledge also includes method limits. Interviews provide context and alliance but can be affected by memory, impression management, shame, fear, cultural expectations, and symptom fluctuation. Tests add standardized data, but they are only useful when administration, norms, validity evidence, and interpretation match the case. Records and collateral information can correct blind spots, yet they must be evaluated for relevance and bias.
Use this study workflow when answering EPPP assessment items:
- Identify the referral question and setting.
- Determine what data sources are needed.
- Check whether the method fits the person, language, culture, disability status, and developmental level.
- Interpret scores only within the test's evidence base.
- Integrate findings with history, observation, records, and differential diagnosis.
- Communicate conclusions with limitations, alternatives, and recommendations.
The best EPPP answer usually respects both science and client welfare. It avoids shortcut labels, unsupported certainty, and mechanically applying instruments. It also avoids refusing assessment when adaptation, consultation, collateral data, or referral can produce a more accurate and fair evaluation.
Which official ASPPB fact is most directly relevant when planning how much attention to give assessment and diagnosis in Part 1 study?
A candidate sees a question about choosing an assessment method before the referral question is clear. What is the best first principle?
Why should an EPPP candidate avoid trying to identify which Part 1 items are pretest items?