How to Pass Polygraph Test Police

Title: How to Pass a Polygraph Test: A Comprehensive Guide for Police Applicants


As part of the rigorous selection process for law enforcement agencies, many aspiring police officers are required to undergo a polygraph test. The polygraph, commonly known as a lie detector test, is designed to measure physiological responses to determine the truthfulness of a person’s statements. While the test may seem intimidating, with proper preparation and understanding, you can increase your chances of passing it successfully. In this article, we will delve into the intricacies of polygraph tests, discuss useful tips, and answer some frequently asked questions (FAQs) to help you navigate this crucial step in your law enforcement career.

Understanding the Polygraph Test:

1. The Science Behind It:
A polygraph measures physiological indicators such as blood pressure, heart rate, breathing patterns, and skin conductivity. These responses, when analyzed by a trained examiner, are used to determine the veracity of the test-taker’s statements.

2. Types of Questions:
Polygraph tests typically consist of three types of questions: relevant, irrelevant, and control questions. Relevant questions pertain to the specific issue being investigated, while irrelevant questions serve as a baseline for comparison. Control questions are meant to evoke a physiological response, helping the examiner distinguish truthful responses from deceptive ones.

Tips to Pass a Polygraph Test:

1. Stay Calm and Relaxed:
Maintaining a calm and relaxed state of mind is crucial during the test. Anxiety and stress can interfere with accurate readings, potentially leading to false results. Practice deep breathing techniques and stay focused on remaining composed throughout the examination.

2. Cooperate with the Examiner:
Building rapport with the examiner is important. Establishing trust and cooperation can help create a more favorable environment during the test. Answer all questions truthfully and attentively, following the instructions given by the examiner.

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3. Prepare Beforehand:
Familiarize yourself with the polygraph process and the types of questions commonly asked. This will help reduce anxiety and allow you to prepare honest and accurate responses. Practice answering potential questions with a friend or family member to simulate the test environment.

4. Avoid Countermeasures:
Attempting to deceive the polygraph through countermeasures is not advisable and could lead to disqualification. Instead, focus on truthfulness and transparency. Countermeasures can be detected by experienced polygraph examiners, potentially compromising your chances of passing.

Frequently Asked Questions (FAQs):

Q1. Can I refuse to take a polygraph test during the police application process?
A1. While it ultimately depends on the policies of the specific law enforcement agency, refusing to take a polygraph test may result in disqualification from the application process.

Q2. What happens if I fail the polygraph test?
A2. Failing a polygraph test does not necessarily imply guilt or deception. However, it may affect your chances of being selected for the police force. Some agencies allow retests or appeals, which can provide an opportunity to clarify any misunderstandings.

Q3. Can physical or mental health conditions impact polygraph results?
A3. Certain physical or mental health conditions may affect the accuracy of polygraph results. It is crucial to inform the examiner of any relevant conditions beforehand to ensure accurate interpretation.

Q4. Are polygraph tests 100% accurate?
A4. Polygraph tests are not foolproof and can produce both false-positive and false-negative results. Factors such as the examiner’s expertise and the test-taker’s physiological responses can influence the accuracy of the test.

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Q5. Can I consult an attorney before taking a polygraph test?
A5. It is advisable to consult with an attorney familiar with polygraph procedures to understand your rights and obligations. They can provide guidance and support throughout the process, ensuring fair treatment.


Passing a polygraph test is an essential step in the police application process. By understanding the science behind the test, preparing adequately, and maintaining a calm demeanor, you can enhance your chances of success. Remember, honesty and cooperation are key to a favorable outcome. While the polygraph is not infallible, approaching it with the right mindset and knowledge will help you navigate this crucial hurdle in your law enforcement journey.