Before the Badge
Hiring a police officer, firefighter, paramedic, or 911 dispatcher is one of the most expensive decisions a public agency makes. Between recruiting, background investigations, academy tuition, field training, equipment, and salary, a single new hire can represent a large investment before that person ever works a solo shift. Get it right, and you have a public servant who may carry your department's name for the next twenty-five years. Get it wrong, and the costs show up in turnover, complaints, liability, injured coworkers, and headlines nobody wants to read.
The pre-employment psychological evaluation is the step in that hiring pipeline that looks at something a polygraph, a physical agility test, and a background check cannot fully measure: how a candidate is likely to think, feel, and behave under the unique pressures of public safety work.
I am a licensed clinical psychologist who has worked extensively with trauma for 15 years, and I am a veteran and former VA Police Officer. I have watched good people thrive in uniform and I have watched the job chew up people who were never given an honest look at whether it fit them. This article explains what a pre-employment psychological screening involves, how I use the MCMI-IV and PAI, what the law requires, and how departments across Upstate South Carolina can get more value from the process.
What a Pre-Employment Psychological Evaluation Is For
A pre-employment psychological evaluation, sometimes called a psychological screening or a "psych eval," is a structured assessment of whether a candidate meets the emotional and behavioral requirements of a specific public safety role. It is not a search for a perfect person. There is no such thing, and a department full of identical personalities would be a strange place to work.
Instead, the evaluation asks two practical questions:
Does this candidate show any psychological condition or pattern that would likely prevent safe and effective performance of the job's essential functions?
Where does this candidate stand on the traits that matter most for this role, such as stress tolerance, integrity, impulse control, judgment, teamwork, and the ability to take feedback?
The IACP Police Psychological Services Section publishes preemployment evaluation guidelines that many agencies and psychologists treat as the professional standard of care. Those guidelines emphasize that the evaluation should be based on a job analysis, conducted by a qualified licensed psychologist, and built on multiple sources of information rather than a single test score (IACP Police Psychological Services Section, 2020).
The Legal Guardrail: The Conditional Offer
This is the part that trips up agencies more than any other. Under the Americans with Disabilities Act, a psychological evaluation designed to identify mental health conditions is considered a medical examination. Employers may require a medical examination only after a conditional offer of employment has been made, and they must apply the requirement to everyone entering the same job category (Equal Employment Opportunity Commission [EEOC], 1995).
In practice, the order of operations looks like this:
Application, written testing, physical ability testing, interviews, and the non-medical parts of the background investigation
Conditional offer of employment
Medical examination, drug screening, and the psychological evaluation
Final hiring decision
Running the psychological evaluation before the conditional offer is one of the most common, and most avoidable, legal mistakes I see. If your agency's process is out of order, fix that first. It costs nothing and it protects everyone.
Who Needs One?
Requirements vary by agency, role, and state and local rules, so every department should confirm what applies to them. In general, pre-employment psychological evaluations are commonly required or recommended for:
Police officers and sheriff's deputies
Detention and corrections officers
Firefighters, including career and some volunteer departments
EMTs and paramedics
911 telecommunicators and dispatchers
Campus, hospital, and airport police
Armed security officers and specialized units such as SWAT, bomb squads, and undercover assignments
Dispatchers deserve a special mention. They absorb an extraordinary amount of secondhand trauma, often with no closure on how the call ended. Screening them with the same care as street personnel is not overkill. It is respect for the job.
What the Evaluation Looks Like
1. Job-related criteria
A good evaluation starts with knowing the job. Officers, firefighters, and dispatchers share some core traits, but the day-to-day demands are different. A patrol deputy working alone on a rural road at 3 a.m. and a firefighter living in close quarters with a crew for 24-hour shifts need somewhat different strengths. I tailor my assessment to the role and the agency's stated requirements.
2. Personal history questionnaire
Candidates complete a detailed questionnaire covering education, employment, relationships, finances, legal history, substance use, and prior treatment. This gives the interview a roadmap and helps identify areas that need a closer look.
3. Psychological testing
Standardized, validated testing is the backbone of a defensible evaluation. I use the MCMI-IV, the PAI, or both, depending on the department's requirements (more on that below).
4. Background information
With the candidate's authorization, I review information from the agency's background investigation. When a candidate's test results and interview line up with their real-world history, confidence in the recommendation goes up. When they do not, that mismatch is exactly what needs to be explored.
5. Structured clinical interview
The interview is a face-to-face conversation that clarifies test results and history, and gives the candidate a chance to explain themselves. I am looking at how they handle stress, conflict, authority, mistakes, and ambiguity. Many candidates walk in expecting a trap. What they usually find is a professional conversation, sometimes with a little humor. (No, I will not ask you what kind of tree you would be.)
6. Written report and recommendation
The agency receives a written report with a clear recommendation, typically in categories such as acceptable, acceptable with reservations, or not recommended for the position, along with the job-related reasons behind it. The hiring decision always remains the agency's.
MCMI-IV and PAI: The Tools and Why Each Is Used
The MCMI-IV
The Millon Clinical Multiaxial Inventory-IV is a 195-item true/false questionnaire that assesses personality patterns and clinical syndromes in adults (Millon et al., 2015). Its strength is personality. It helps identify enduring styles such as rigidity, impulsivity, suspiciousness, narcissistic entitlement, or emotional instability that may not show up in a single interview but tend to surface over years of service. It is efficient to administer, typically about 25 to 30 minutes, and includes validity measures that flag over- and under-reporting.
For many agencies, the MCMI-IV, combined with a thorough history, background review, and interview, provides enough information to make a sound, job-related recommendation.
The PAI
The Personality Assessment Inventory is a 344-item inventory that measures a broad range of clinical, interpersonal, and treatment-related characteristics (Morey, 2007). One of its most valuable features for public safety hiring is the availability of interpretive reports that compare a candidate with other public safety applicants rather than only with clinical or general population samples (Roberts et al., 2004). That comparison matters, because public safety candidates as a group look different from the general population on personality tests.
When a department's policy specifies the PAI, requests public safety comparison norms, or wants a broader look at areas like substance use risk and anger, I use the PAI alone or alongside the MCMI-IV.
Everybody fakes good (a little)
Picture the most important job interview of your life. Now imagine answering the question "I sometimes get angry" with a straight "true." Most candidates are understandably trying to put their best foot forward. That is normal, and both tests are built to measure it. Mild defensiveness is expected. Extreme defensiveness, where a candidate denies common human flaws that virtually everyone admits to, makes the results harder to interpret and tells me where to spend more time in the interview.
My advice to candidates is always the same: answer honestly, answer quickly, and do not try to game the test. The validity scales are better at spotting it than you are at hiding it.
The Traits That Predict Success
Across law enforcement, fire, and EMS, certain qualities consistently matter:
Emotional stability under stress — staying regulated when everyone else is not
Integrity and rule adherence — doing the right thing when no one is watching
Impulse control and judgment — pausing before acting, especially with force
Teamwork — living, working, and trusting others with your life
Openness to feedback — learning from field training and after-action reviews
Healthy coping — having ways to decompress that do not involve alcohol, isolation, or anger
That last one is my soapbox. First responders face high rates of trauma exposure. SAMHSA estimates that about 30% of first responders develop behavioral health conditions such as depression and PTSD, compared with about 20% of the general population (Substance Abuse and Mental Health Services Administration [SAMHSA], 2018). A candidate who already has healthy coping skills is not just a better hire on day one. They are a better bet in year fifteen.
"The police are the public and the public are the police." — A principle often attributed to Sir Robert Peel
That idea applies to every uniform, not just the police. The people we hire into public safety carry the public's trust into the worst moments of other people's lives. Screening them carefully is part of keeping that trust.
Why Candidates Are Sometimes Not Recommended
Candidates are often surprised to learn that most "not recommended" outcomes have little to do with a mental health diagnosis. In my experience, the more common concerns are patterns, not labels. Examples include:
A history of poor impulse control — repeated fights, road-rage incidents, or domestic disturbances, especially recent ones
Integrity concerns — inconsistencies between the questionnaire, the background investigation, and the interview
Problematic substance use — current patterns of heavy drinking or drug use that would be dangerous in a safety-sensitive role
Rigid or hostile attitudes — difficulty accepting authority or feedback, or contempt for the public the candidate would be serving
Untreated, active symptoms — for example, a severe, current condition that is not being managed and would likely interfere with the job right now
Notice the word current. A candidate who struggled with depression five years ago, got treatment, and has been doing well is usually in a very different position from someone who is actively struggling today and has no support in place. Recovery and self-awareness count.
What Happens If a Candidate Is Not Recommended?
The agency, not the psychologist, makes the final hiring decision. When a candidate is not recommended, the agency's policy determines what happens next. Some departments allow a candidate to request a second opinion from another qualified psychologist, and some allow reapplication after a set period of time. Candidates should ask the hiring agency about its specific policy.
For candidates who are not recommended, I encourage a mindset shift: this is information, not a life sentence. I have seen people take a "not now," work on the specific issue that was identified, and come back stronger. Public safety is a career where maturity and self-knowledge are assets, and sometimes a little more time is exactly what builds them.
Action Steps for Agencies
Audit your sequence. Make sure psychological evaluations happen only after a conditional offer.
Put your requirements in writing. Specify which tests your department requires (for example, MCMI-IV only, PAI only, or both), which roles are screened, and what recommendation categories you want reported.
Share the job description. The more the evaluator knows about the real job, the more useful the recommendation.
Send the background early. Evaluations are stronger and faster when background information is available before the interview.
Treat the psych eval as one input. It works best alongside the background investigation, interviews, and field training, not as a stand-alone gate.
Think beyond hiring. Build wellness into the career from day one: peer support, access to trauma-informed therapy, and a clear, fair fitness-for-duty evaluation policy for the rare moments when something goes wrong.
Action Steps for Candidates
Get a good night's sleep. Seriously. Fatigue affects mood, attention, and test performance.
Be honest on the history questionnaire. Past mistakes are rarely disqualifying on their own. Hiding them often is.
Don't over-prepare. There are no trick answers to memorize. Internet "cheat sheets" usually make results worse, not better.
Talk about past help-seeking plainly. Having been to counseling is not a red flag. Knowing when to ask for help is a strength in this line of work.
Ask questions. You are entitled to understand the process and who receives the results.
Serving Departments Throughout Upstate South Carolina
Your Kind of Happy LLC provides pre-employment psychological evaluations for police departments, sheriff's offices, fire departments and fire districts, EMS agencies, 911 communications centers, detention centers, campus police, and private security employers. Evaluations are conducted at our Simpsonville office, and we serve agencies in Greenville, Spartanburg, Anderson, Simpsonville, Greer, Mauldin, Fountain Inn, Easley, Taylors, Travelers Rest, Piedmont, Powdersville, Pickens, Clemson, Central, Seneca, Walhalla, Laurens, Clinton, Gaffney, Boiling Springs, Duncan, Lyman, Inman, Woodruff, Union, Belton, Williamston, Honea Path, Greenwood, and Abbeville, and throughout Greenville, Spartanburg, Anderson, Pickens, Oconee, Laurens, Cherokee, Union, Greenwood, and Abbeville counties.
To see all of our public safety services, visit our First Responder Evaluations page.
Conclusion
A pre-employment psychological evaluation is not about screening people out. It is about putting the right people in the right seats, with eyes open on both sides. Departments get a defensible, job-related recommendation. Candidates get a fair, professional process. And the communities of the Upstate get responders who are ready for what the job will ask of them.
If your agency is building or updating its hiring process, I would be glad to talk it through.
Dr. Matthew McKeithan, Psy.D.
Licensed Clinical Psychologist | Your Kind of Happy LLC
Phone: (864) 400-1469
Email: drmatt@yourkindofhappy.org
Web: yourkindofhappy.org
Schedule a free consultation
References
Equal Employment Opportunity Commission. (1995). ADA enforcement guidance: Preemployment disability-related questions and medical examinations. U.S. Equal Employment Opportunity Commission.
International Association of Chiefs of Police, Police Psychological Services Section. (2020). Preemployment psychological evaluation guidelines. International Association of Chiefs of Police.
Millon, T., Grossman, S., & Millon, C. (2015). MCMI-IV: Millon Clinical Multiaxial Inventory manual (1st ed.). Pearson.
Morey, L. C. (2007). Personality Assessment Inventory professional manual (2nd ed.). Psychological Assessment Resources.
Roberts, M. D., Thompson, J. A., & Johnson, M. (2004). PAI law enforcement, corrections, and public safety selection report module. Psychological Assessment Resources.
Substance Abuse and Mental Health Services Administration. (2018). First responders: Behavioral health concerns, emergency response, and trauma (Disaster Technical Assistance Center Supplemental Research Bulletin). U.S. Department of Health and Human Services.