Police Psychological Exam: Tests, Interview and Preparation

The psychological evaluation is the stage of police hiring that candidates worry about most and understand least. Unlike the written test or the physical ability test, you cannot simply train harder for it, and the rules about what is measured are rarely explained in the job posting.

This page explains how a pre-employment psychological evaluation for police officers and deputies usually works in the United States, based on the guidelines psychologists themselves follow. It covers the written tests (such as the MMPI-3, PAI and CPI), the interview with the psychologist, how a suitability decision is reached, and what honest preparation looks like. There are no "right answers" on these tests, and this page will not pretend otherwise.

What the police psychological evaluation is for

Most states require peace officers to be psychologically suitable for the job. In California, for example, Government Code section 1031(f) requires peace officers to be found free of any physical, emotional or mental condition, including bias against protected groups, that might adversely affect the exercise of their powers, with the emotional and mental evaluation done by a licensed psychologist or a qualifying physician. POST also publishes a detailed Peace Officer Psychological Screening Manual for evaluators.

The International Association of Chiefs of Police (IACP) Police Psychological Services Section publishes preemployment psychological evaluation guidelines, revised in 2020, that are widely used across the country. They define the evaluation as a specialized examination to decide whether a candidate meets the psychological suitability requirements set by law, plus any other psychologically relevant criteria the agency sets. In most jurisdictions, the minimum is that you are free of any psychological impairment that could affect safety-based duties and that you can withstand the psychological demands of the job.

The point is not to find perfect people. It is to identify candidates whose history, test results or interview suggest a real risk for a job that involves weapons, authority over others, and repeated exposure to stress.

When it happens in the hiring process

A typical police hiring sequence runs: application, written test (in California usually the PELLET B), physical ability test, oral board, background investigation, then a conditional offer followed by medical and psychological evaluations.

The order matters. The IACP guidelines note that under the Americans with Disabilities Act (ADA), medical examinations, which include assessment of mental or emotional impairment, are deferred until after a conditional offer. So the clinical part of the psych exam normally comes after you have been given a conditional offer. Some agencies use tests of normal personality earlier, which the guidelines allow as long as those tests are not designed or able to diagnose disabilities.

The steps of the psychological evaluation

Procedures vary by agency and evaluator, but the IACP guidelines describe a consistent structure.

1. Disclosure and consent

Before any testing, you should be told the nature and purpose of the evaluation, who will receive the results, that the hiring agency is the client (not you), how the information may be used and the limits of confidentiality. The guidelines recommend that you sign a written disclosure. Read it properly.

2. Written tests

You complete a battery of written psychological tests, usually on a computer. The guidelines recommend instruments with documented reliability and validity for screening public safety applicants, scored with the publisher's licensed software or keys. Common choices include:

  • MMPI-3 (or the older MMPI-2-RF). The MMPI-3, published by the University of Minnesota Press, has 335 true/false items and takes about 25 to 35 minutes on a computer, according to Pearson's MMPI-3 brochure. It includes validity scales and a dedicated Police Candidate Interpretive Report that compares results with police candidate data.
  • Personality Assessment Inventory (PAI). Published by PAR, it has 344 items and the publisher gives an administration time of 25 to 55 minutes. A POST job-relatedness report describes it as an objective inventory of adult personality and psychopathology.
  • California Psychological Inventory (CPI). A self-report questionnaire of normal-range behavior, such as dominance, responsibility and self-control. POST describes it as generally paired with a test of psychopathology such as the PAI or MMPI. POST regulations require at least two self-report instruments, one measuring normal personality and one measuring psychopathology.

Evaluators may use other validated tests too. Which ones you get is the psychologist's decision, not yours.

3. Personal history questionnaire

Most evaluators ask you to complete a detailed history form covering school, work, relationships, family, legal history, finances, substance use and mental health. The IACP guidelines say evaluators should gather this information in a standardized way. It will be compared with your background investigation.

4. Interview with the psychologist

The guidelines say a face-to-face interview, in person or by video, should take place before any final suitability decision. Its purpose is to collect interpersonal and mental status information and to confirm or clarify your test scores and history. The psychologist reviews your test results first, so expect questions that follow up on specific answers or patterns.

5. Integration and report

The psychologist combines tests, history, background information and the interview. The guidelines say conclusions should rest on consistency across data sources rather than any single source, and that the report should give a clear suitability determination linked to the job. Diagnostic labels should be avoided unless they are relevant and necessary.

6. Validity period and appeals

The guidelines recommend treating a suitability recommendation as valid for no longer than one year unless policy says otherwise, and they include a section on appeals and second opinions. Ask the agency what its process is if you are found not suitable; many states have their own rules.

Worked examples of item types

These are our own illustrative items. They show the type of statement you will meet and what it is designed to pick up. We do not give "best" answers for these, because there are none: the scales work by comparing your pattern with reference groups, and inconsistent or overly positive patterns are flagged.

Example 1: true/false self-description

"I sometimes feel irritable for no clear reason."

What it is about: mood and emotional regulation. Nearly everyone has days like this. Answering "false" to a long series of statements like this one, all to look flawless, is exactly what validity scales are built to detect.

Example 2: the improbable virtue item

"I have never told a lie."

What it is about: this kind of item appears on scales that measure defensive or overly positive self-presentation. Police candidates as a group tend to present themselves positively, which is why public safety comparison groups exist. Claiming perfection across many such items makes your profile harder to interpret, not better.

Example 3: rating scale

"I am comfortable taking charge when a group has no leader." Rated from false to very true.

What it is about: dominance and social confidence, normal-range traits on inventories like the CPI. There is no ideal extreme; very high and very low scores can both prompt questions in the interview.

Example 4: consistency pairs

Two statements, far apart in the test: "I like most people I meet" and "Most people cannot be trusted."

What it is about: consistency. Inconsistency scales look at whether you respond to similar content in similar ways. Random or careless answering, often from rushing or fatigue, can invalidate a profile.

Practice questions: handling the process

The tests themselves have no right answers, but how you handle the process does. These items have a clearly best option.

Practice question 1

On the personal history questionnaire you remember a minor shoplifting citation from when you were 17. You did not list it on your background packet because you forgot. What should you do?

A. Leave it off the questionnaire too, so the two forms match B. List it now and tell the psychologist you left it off the background packet by mistake C. List it only if the psychologist asks directly D. Describe it in vague terms so it sounds less serious

Answer: B. The IACP guidelines say evaluators compare your information with the background investigation and review substantive discrepancies with the agency. An honest correction is a small issue; a concealed record discovered later looks like dishonesty, which is far more damaging. A, C and D all increase the risk of a discrepancy that reads as deception.

Practice question 2

Halfway through the written test you realize you misread the instructions and have been answering several items without reading them fully. What is the best response?

A. Speed up to finish on time B. Tell the proctor or psychologist, and read every remaining item carefully C. Go back and change all earlier answers to "false" D. Stop answering the remaining items

Answer: B. Careless responding can produce an inconsistent profile. Flagging it lets the evaluator take it into account and gives you a chance to correct it. A and C make the problem worse, and D leaves items unanswered, which can make a test unscorable.

Practice question 3

In the interview, the psychologist asks about a period of heavy drinking in college. What is the best approach?

A. Deny it, because it was a long time ago B. Describe it honestly, including what changed and how your drinking looks now C. Say you cannot remember D. Ask why it matters and refuse to discuss it

Answer: B. The purpose of the interview is to clarify history and test data. Evaluators look for insight and change over time, not a spotless past. A and C undermine credibility if your history form or background says otherwise, and D comes across as defensive in an evaluation you agreed to take part in.

Practice question 4

The psychologist asks how you would feel about using force on someone. Which answer is most appropriate?

A. "I look forward to it; that's part of why I want the job." B. "I'd never use force under any circumstances." C. "I'd use the level of force the situation and policy require, and I'd prefer to resolve things by talking first." D. "I'd do whatever my partner does."

Answer: C. It shows realistic acceptance of a core part of the job, restraint, and respect for policy. A raises concerns about aggression, B suggests you could freeze or be unwilling to do the job, and D shows no independent judgment.

How to prepare honestly

You cannot study for the MMPI or PAI the way you study for a reading test, and trying to "beat" them usually backfires. What you can do:

  1. Get your history straight. Pull together dates of employment, addresses, schools, any arrests or citations, driving incidents, debts and past counseling. Most problems in psych evaluations come from inconsistency with the background file, not from the tests.
  2. Sleep and eat normally. The written battery is long. Fatigue increases careless answers.
  3. Read every item. Answer what the statement actually says, not what you think it is testing.
  4. Answer as you are, not as you think an officer should be. Validity scales are designed to detect overly positive responding, and public safety comparison groups already allow for the fact that candidates present themselves well.
  5. Prepare for the interview like a structured conversation. Be ready to talk about why you want the job, how you handle stress and conflict, your relationships, and any difficult periods in your life. Our guide to behavioral interview questions helps you practice clear, concrete answers.
  6. Be honest about mental health support. Having had counseling is not disqualifying in itself. Evaluators are interested in what happened, how you dealt with it and how you function now. The IACP guidelines say that where relevant, records from treating professionals may be reviewed before a decision.

If you want to understand personality questionnaires more generally, see our article on understanding personality assessments and our guide to integrity tests, which some agencies also use.

Common mistakes

  • Trying to look perfect. Unrealistic virtue claims stand out.
  • Rushing. Inconsistent answering can invalidate a profile.
  • Contradicting your background packet. Omissions look like deception.
  • Treating the interview as a formality. It is where the psychologist checks the questions raised by your test results.
  • Taking advice from forums about which answers to give. Lists of "correct answers" are not based on how the scales are scored.

The written and interview stages that come before this evaluation can be practiced. Our all-in-one test and interview package covers reading, reasoning and interview preparation.

Frequently Asked Questions

Can you fail a police psychological exam?

Yes. The psychologist gives the agency a suitability opinion, and a candidate can be found not suitable. That is not a medical diagnosis. It means the evaluator judged that something in the data could affect safe and effective performance of the job.

When does the police psych evaluation take place?

Usually after a conditional offer of employment. The IACP guidelines point out that the ADA treats assessment of mental or emotional impairment as a medical examination, which has to wait until after a conditional offer.

Which tests are used in a police psychological exam?

The evaluating psychologist chooses the battery. Common instruments include the MMPI-3 or MMPI-2-RF, the Personality Assessment Inventory (PAI) and the California Psychological Inventory (CPI), plus a personal history questionnaire and an interview.

Can you study for the MMPI or PAI?

Not in the sense of learning right answers. These inventories include validity scales that detect inconsistent, exaggerated or overly positive responding. The best preparation is to be rested, read each statement carefully and answer honestly and consistently.

How long is a police psychological evaluation valid?

The IACP guidelines recommend that agencies treat a suitability recommendation as valid for no longer than one year, unless their own policy or regulation sets a different period.

About the author

Ingmar van Maurik is a specialist in test and interview preparation who helps candidates perform better in recruitment processes.

References