Polygraph Tests in Media: Fact vs Fiction in TV & Movies

The Entertainment Imperative vs. Procedural Accuracy

Television and film operate under a fundamental constraint that professional polygraph testing does not: the need to entertain. A real polygraph examination, with its extended pre-test interview, repetitive question sets, and methodical post-test analysis, would make for exceptionally boring television. Screenwriters and directors therefore compress, dramatize, and fabricate elements of the polygraph process to serve their narrative needs.

This is not a small distortion. The difference between a media-depicted polygraph and a real one is comparable to the difference between a televised courtroom drama and an actual multi-week trial. Nearly every element of the process is altered for dramatic effect — from the physical environment and equipment to the examiner's behavior, the questioning process, and how results are delivered and interpreted. Our analysis of polygraph scenes in movies reveals just how far Hollywood strays from reality.

Decades of Accumulated Misconceptions and the 'CSI Effect'

The polygraph has appeared in entertainment media since at least the 1940s, and each generation of films and shows has built upon previous distortions. Certain tropes — the nervous sweating suspect, the aggressive examiner, the dramatic needle swing, the instant 'gotcha' moment — have become so deeply embedded in popular culture that many people accept them as fact without question.

Research in public perception of forensic science consistently shows that media exposure significantly shapes people's beliefs about investigative tools. This phenomenon, known as the 'CSI effect,' has been documented since 2004, when the term first appeared in mainstream media [2]Verified CSI Effect
Confirms the CSI effect term appeared in mainstream media as early as 2004 and documents how forensic TV shows shape public perception. Studies have shown that forensic-based TV series provide a sense of plausibility not dependent on factual accuracy [3]Verified The CSI effect in Forensic Odontology: A systematic review
Confirms forensic-based TV series provide a sense of plausibility not dependent on factual accuracy. One study found that 46% of prospective jurors expected to see some kind of scientific evidence in every criminal case, and 22% expected DNA evidence in every case [4]Verified The 'CSI Effect': Does It Really Exist?
Confirms juror survey data showing 46% expected scientific evidence in every criminal case. A 2025 study found that 71.5% of forensic science students reported that television programmes played a role in their choice of degree [5]Verified The CSI effect in academia: influencing forensic science enrolment and perception in higher education
Confirms 71.5% of forensic science students reported TV programmes influenced their degree choice.

This same distortion applies to polygraph testing. People who have never taken a polygraph test form strong opinions about the process, its accuracy, and its limitations based almost entirely on fictional portrayals. For those preparing for an actual examination, this can create significant anxiety based on entirely inaccurate expectations. Shows like Forensic Files, I Am A Killer on Netflix, and even Netflix's Dirty Money all contribute to these misconceptions.

The Feedback Loop: Media Shapes Policy Discussions

The impact of media distortion extends beyond individual test-takers. Public misconceptions fueled by entertainment portrayals influence policy discussions, jury perceptions, and even legislative debates about polygraph admissibility in court. Research on the role of contextual information in polygraph scoring shows how external factors can influence outcomes — a finding that underscores why accurate public understanding matters [6]Verified Influence of Case Facts on Blind Scorers of Polygraph Tests
Confirms that contextual information, particularly incriminating evidence, can bias blind scoring of polygraph quality control reviews. When legislators, jurors, and voters carry Hollywood-shaped beliefs about what a polygraph can and cannot do, it creates a distorted foundation for decision-making that affects real cases and real people.

Lynn McLain's research on evidence and credibility for administrative law judges highlights how the boundary between fact and fiction affects judicial decision-making in the 21st century [7]Verified Fact, Fiction and Proof in the 21st Century: Evidence and Credibility for Fact Finding by Administrative Law Judges
Foundational research relevant to separating fact from fiction in credibility assessment contexts.

Myth 1: Polygraph Tests Are Quick, High-Pressure Encounters

Perhaps the most pervasive media myth is that a polygraph test is a brief, intense experience lasting just a few minutes. On screen, characters are strapped in, asked a handful of pointed questions, and results are delivered — all within a single scene.

In reality, a professional polygraph examination is a carefully structured process lasting 90 minutes to 3 hours or more. The pre-test interview alone — where the examiner explains the process, discusses informed consent, gathers background information, and reviews every question — typically takes 45 to 90 minutes. The actual data collection involves multiple chart series, each requiring the examinee to sit still and answer questions while physiological measurements are recorded. Post-test analysis adds additional time. Learn what to expect in our guide to the polygraph post-test interview.

Myth 2: Examiners Are Aggressive Interrogators

Crime dramas love the confrontational examiner — the one who leans in, shouts accusations, slams files on the table, and psychologically manipulates the subject. This portrayal bears no resemblance to professional polygraph practice.

Qualified examiners follow strict codes of ethics established by organizations like the American Polygraph Association (APA), which was established in 1966 and promotes the highest standards of professional, ethical, and scientific practices for its 2,700+ members [1]Verified Meta-Analytic Survey of Criterion Accuracy of Validated Polygraph Techniques
Confirms aggregated decision accuracy of 89% for single-issue testing, 85% for multiple-issue, and 87% combined across all validated techniques. The examiner's goal is to create an environment where physiological responses to questions can be accurately measured, which requires the examinee to be as calm and comfortable as possible — the exact opposite of an aggressive interrogation. Research on police-induced confessions demonstrates that coercive interrogation techniques can produce false confessions, which is precisely why professional polygraph practice avoids such methods [8]Verified Police-induced confessions: Risk factors and recommendations
Confirms false confessions result from coercive interrogation techniques, supporting why professional polygraph practice avoids aggressive methods.

Myth 3: There Are Surprise 'Gotcha' Questions

In movies and TV shows, the dramatic tension often comes from a surprise question that catches the subject off guard, triggering a dramatic physical reaction. In professional practice, this never happens.

Every single question that will be asked during the examination is reviewed with the examinee during the pre-test interview. Both parties must agree on the exact wording before testing begins. There are no surprise questions, no trick questions, and no questions designed to shock or manipulate. This is both an ethical requirement and a scientific necessity — surprise questions would introduce unwanted variables that could compromise data quality. Research on polygraph contaminating factors confirms that multiple psychological factors can affect results even when standard protocols are followed [9]Verified Polygraph Examinations Contaminating Factors
Confirms multiple psychological contaminating factors can cause innocent examinees to produce false positive results even when protocols are followed.

Myth 4: The Machine Beeps or Flashes When Someone Lies

This may be the most visually iconic myth: the polygraph machine producing dramatic beeping sounds, flashing red lights, or alarm-like indicators when the subject allegedly lies.

Modern polygraph instruments are computerized systems that silently record continuous physiological data as waveform patterns on a computer screen [10]Verified The Polygraph and the Detection of Deception
Confirms polygraph records physiological responses including breathing, blood pressure, and sweat secretion; documents European adoption of polygraph testing. There are no audible alarms, no red lights, and no real-time lie/truth indicators. The data is collected during the session and analyzed afterward by the examiner using validated scoring methodologies. To understand the real analysis process, explore our guide to APA validated polygraph techniques.

Myth 5: Results Are Delivered Instantly During the Test

The dramatic reveal — where the examiner announces mid-test that the subject is lying — is a hallmark of media polygraph scenes. In professional practice, results are never delivered during the data collection phase.

After all chart series are completed, the examiner must review the physiological data, apply a scoring algorithm (numerical or computerized), and reach a professional opinion. This analysis can take 30 minutes to several hours depending on complexity. Studies have shown that even blind scoring by experienced examiners requires careful review to avoid the influence of contextual information on results [6]Verified Influence of Case Facts on Blind Scorers of Polygraph Tests
Confirms that contextual information, particularly incriminating evidence, can bias blind scoring of polygraph quality control reviews.

Myth 6: Polygraphs Can Detect Any Lie About Anything

Media portrayals often present the polygraph as an all-knowing truth detector capable of uncovering any deception about any topic. In reality, a polygraph examination is focused on specific, pre-determined relevant questions — typically one to three specific issues per examination.

The APA's 2011 meta-analysis confirmed that techniques intended for single-issue diagnostic testing produced higher accuracy (89%) than those covering multiple issues (85%), demonstrating that focused testing is more effective [1]Verified Meta-Analytic Survey of Criterion Accuracy of Validated Polygraph Techniques
Confirms aggregated decision accuracy of 89% for single-issue testing, 85% for multiple-issue, and 87% combined across all validated techniques. The test does not function as a general lie detector, truth serum, or mind-reading device. Its effectiveness depends on carefully constructed questions, proper examiner technique, and appropriate subject conditions. FBI research found the guilty knowledge technique was applicable in only 5.0%-8.6% of criminal investigations, illustrating practical limitations on what can be tested [11]Verified A Paucity of Operable Case Facts Restricts Applicability of the Guilty Knowledge Technique in FBI Criminal Polygraph Examinations
Confirms guilty knowledge technique was applicable in only 5.0%-8.6% of FBI criminal investigations.

Myth 7: Obvious Physical Signs of Deception Are Visible

On screen, subjects who are lying typically display dramatic physical indicators: profuse sweating, visible trembling, darting eyes, flushed faces, and nervous fidgeting. While physiological changes do occur during deception, they are measured at a level far more subtle than what is visible to the naked eye.

The polygraph measures changes in cardiovascular activity (blood pressure, pulse rate), respiratory patterns (rate, depth, ratio of inhalation to exhalation), and electrodermal activity (minute changes in sweat gland activity) [10]Verified The Polygraph and the Detection of Deception
Confirms polygraph records physiological responses including breathing, blood pressure, and sweat secretion; documents European adoption of polygraph testing. These changes are typically invisible to an observer and are detected only through the precision instruments attached to the examinee. The autonomic nervous system drives these responses at a level that requires electronic sensors to detect.

Myth 8: The Polygraph Uses Outdated, Analog Equipment

Hollywood loves the visual of a vintage polygraph machine with scrolling paper, mechanical ink pens tracing wildly across a moving chart, and a tangle of wires and tubes. While this imagery references real instruments from decades past, modern polygraph testing uses sophisticated computerized equipment.

Researchers David Raskin and John Kircher laid the scientific foundation for the first computerized polygraph system in 1979, and they developed the first computerized field polygraph in 1991 [12]Verified Credibility Assessment: Scientific Research and Applications
Confirms the 2014 publication by Raskin, Honts, and Kircher published by Academic Press, covering polygraph techniques, countermeasures, and credibility assessment methods. Today, modern instruments use electronic sensors that convert physiological signals into digital data, recorded by specialized software on a laptop. As Meijer and Verschuere noted, modern polygraphs use 'a small amplifier/digitizer and a laptop recording the signals' [13]Verified The Polygraph and the Detection of Deception (Full Text)
Confirms modern polygraphs use a small amplifier/digitizer and a laptop; details the three primary physiological channels measured. The scrolling paper polygraph is essentially a museum piece.

Myth 9: Only Guilty People Fail Polygraph Tests

Media narratives almost always present polygraph results as definitive proof of guilt or innocence. If a character 'fails,' they are guilty; if they 'pass,' they are telling the truth.

In reality, polygraph testing, like all diagnostic and assessment tools, has inherent limitations. False positive results (truthful people who produce deceptive physiological patterns) and false negative results (deceptive people who produce truthful physiological patterns) can occur. Research on polygraph contaminating factors identifies multiple psychological causes for innocent examinees producing inconclusive or false positive results even when standard protocols are followed correctly [9]Verified Polygraph Examinations Contaminating Factors
Confirms multiple psychological contaminating factors can cause innocent examinees to produce false positive results even when protocols are followed. Professional examiners understand these limitations and present results as professional opinions based on physiological data, not as absolute determinations of guilt or innocence. Understanding validity in polygraph testing is essential for proper interpretation.

Myth 10: You Can Easily Beat a Polygraph with Simple Tricks

Countless movies and TV shows depict characters successfully defeating polygraph tests using simple countermeasures: biting the tongue, clenching toes, pressing a thumbtack in the shoe, or controlling breathing.

While countermeasure research is ongoing, professional examiners are trained to identify attempted manipulation. Modern instruments include motion sensors, pressure pads in the testing chair, and the examiner's direct behavioral observation. Research by Honts (2014) on countermeasures and credibility assessment, published in the book Credibility Assessment: Scientific Research and Applications, provides a comprehensive overview of what is known about countermeasure detection [12]Verified Credibility Assessment: Scientific Research and Applications
Confirms the 2014 publication by Raskin, Honts, and Kircher published by Academic Press, covering polygraph techniques, countermeasures, and credibility assessment methods. The National Research Council (2003) concluded that research on countermeasures was limited but identified it as a significant concern for polygraph validity [14]Verified The Polygraph and Lie Detection
Confirms NRC found specific-incident polygraph tests can discriminate lying from truth telling at rates well above chance; notes limitations of screening polygraph. For a deeper look at this issue, see our guide to common mistakes by novice polygraph examiners.

Myth 11: Polygraphs Are Only Used in Criminal Investigations

Media primarily shows polygraphs in law enforcement and criminal justice contexts, creating the impression that these tests are only for suspects and criminals. In reality, polygraph testing serves a wide range of purposes.

The Employee Polygraph Protection Act of 1988 (EPPA) prohibits most private employers from using lie detector tests, but exempts federal, state, and local government agencies, as well as certain security and pharmaceutical companies [15]Verified Employee Polygraph Protection Act of 1988
Confirms EPPA generally prevents private employers from using polygraph tests, with exemptions for government agencies and certain security/pharmaceutical employers. This means polygraph testing remains widely used for pre-employment screening by government agencies, national security screening, sex offender management, probation monitoring, relationship and infidelity testing, civil litigation support, and therapeutic contexts. Shows like Maury Povich and Steve Wilkos have popularized relationship testing, while Couples Court brings polygraph drama to daytime television.

Myth 12: Anyone Can Administer a Polygraph Test

In TV shows, sometimes detectives or even civilians seem to operate polygraph equipment with no specialized training. In reality, becoming a qualified polygraph examiner requires completing an APA-accredited training program consisting of a minimum of 400 hours of classroom instruction and supervised practice [16]Verified PEAK Basic Polygraph Examiner's Course
Confirms the Basic Polygraph Examiner's Course is APA-accredited and consists of a minimum of 400 hours. Additional requirements include extensive supervised field work, ongoing continuing education (a minimum of 30 hours every two years for APA members [17]Verified Policy for APA Continuing Education Hours
Confirms practicing examiners must complete a minimum of 30 continuing education hours every two years), and adherence to professional standards. Many jurisdictions also require licensing [1]Verified Meta-Analytic Survey of Criterion Accuracy of Validated Polygraph Techniques
Confirms aggregated decision accuracy of 89% for single-issue testing, 85% for multiple-issue, and 87% combined across all validated techniques. The difference between a qualified examiner and an untrained operator is significant and directly affects the validity and reliability of test results.

The Five Phases of a Professional Examination

Understanding the actual polygraph process is the most effective antidote to media-driven misconceptions. A professional polygraph examination follows a structured, standardized protocol designed to maximize accuracy and protect the rights and dignity of the examinee. Here is how the process actually unfolds, in stark contrast to what you see on shows like The Moment of Truth or Try Guys lie detector videos.

Test Duration

Media: The entire test appears to take 2-5 minutes, often compressed into a single dramatic scene. No pre-test or post-test phases are shown.

Reality: Professional examinations take 90 minutes to 3+ hours. The pre-test interview is often the longest single phase, followed by multiple chart series and careful post-test analysis.

Examiner Behavior

Media: The examiner is aggressive, confrontational, and psychologically manipulative. They lean in, raise their voice, and try to intimidate the subject into confessing.

Reality: The examiner is calm, professional, and neutral. They maintain a supportive environment, explain everything thoroughly, and follow strict ethical guidelines established by the APA [1]Verified Meta-Analytic Survey of Criterion Accuracy of Validated Polygraph Techniques
Confirms aggregated decision accuracy of 89% for single-issue testing, 85% for multiple-issue, and 87% combined across all validated techniques. Aggressive behavior would compromise test validity.

Question Style

Media: Questions are surprising, confrontational, open-ended, and designed to provoke emotional reactions. Subjects are asked to explain complex situations in detail.

Reality: Questions are pre-reviewed, specific, closed-ended (yes/no only), and carefully worded. Every question is discussed and agreed upon with the examinee before testing begins. No surprise questions are ever used.

Equipment and Sounds

Media: Vintage analog machines with scrolling paper, dramatic ink pens, beeping alarms, and flashing red lights that indicate deception in real time.

Reality: Modern computerized instruments silently record digital physiological data as waveform patterns on a screen [10]Verified The Polygraph and the Detection of Deception
Confirms polygraph records physiological responses including breathing, blood pressure, and sweat secretion; documents European adoption of polygraph testing [13]Verified The Polygraph and the Detection of Deception (Full Text)
Confirms modern polygraphs use a small amplifier/digitizer and a laptop; details the three primary physiological channels measured. No sounds, no lights, no real-time lie indicators of any kind.

Results Delivery

Media: Results are delivered instantly and dramatically during the test itself. The examiner declares the subject guilty or innocent on the spot.

Reality: Results are determined after the session through careful data analysis using validated scoring methods. Outcomes are expressed as professional opinions — No Deception Indicated (NDI), Deception Indicated (DI), or Inconclusive (INC) — not guilt/innocence verdicts. For more on how results work, see are polygraph exams accurate.

The Evolution of Polygraph Technology

Much of the public's mental image of polygraph equipment is frozen in the mid-20th century, thanks to decades of consistent media imagery. Early polygraph instruments, developed in the 1920s-1940s, were indeed mechanical devices that used ink pens to trace physiological responses onto moving paper charts. As the NRC noted, 'the original analog instruments recorded the data with several pens writing lines on a moving sheet of paper' [14]Verified The Polygraph and Lie Detection
Confirms NRC found specific-incident polygraph tests can discriminate lying from truth telling at rates well above chance; notes limitations of screening polygraph. Hollywood adopted this visual immediately and has largely never updated it.

Modern polygraph instruments are fully computerized. Raskin and Kircher developed the first computerized polygraph system foundation in 1979 and introduced the first fully computerized field polygraph in the early 1990s [12]Verified Credibility Assessment: Scientific Research and Applications
Confirms the 2014 publication by Raskin, Honts, and Kircher published by Academic Press, covering polygraph techniques, countermeasures, and credibility assessment methods. Their computerized polygraph systems are now used in 12 countries. Key features of modern instruments include electronic pneumograph transducers, continuous cardiovascular monitoring, high-sensitivity galvanic skin response sensors, motion and activity sensors for countermeasure detection, computer-assisted scoring algorithms, and digital data storage enabling independent quality review.

What the Sensors Actually Measure

The polygraph does not measure 'lies.' It measures physiological responses associated with the psychological stress of deception. Specifically, it records three primary physiological channels: respiratory activity (breathing rate, depth, and the ratio of inhalation to exhalation), cardiovascular activity (blood pressure, pulse rate, and blood volume changes), and electrodermal activity (minute changes in sweat gland activity on the fingers) [10]Verified The Polygraph and the Detection of Deception
Confirms polygraph records physiological responses including breathing, blood pressure, and sweat secretion; documents European adoption of polygraph testing.

Research continues to explore complementary technologies. A trifactorial model using thermal imaging achieved 83% accuracy with a 13% false alarm rate using multiple thermal regions [18]Verified A trifactorial model of detection of deception using thermography
Confirms the 'at least two of three' thermal regions rule achieved 83% accuracy and 13% false alarm rate. Group-based concealed information testing using dynamic questioning achieved 95% accuracy with zero false positives [19]Verified Detecting concealed information from groups using a dynamic questioning approach
Confirms dynamic group CIT correctly identified the target in 19 of 20 groups (95%) with zero false positives. These emerging approaches may supplement traditional polygraph methods in the future.

The APA Meta-Analysis: Key Findings

The American Polygraph Association undertook an exhaustive review of peer-reviewed publications on polygraph testing, completing a meta-analysis in late 2011 [1]Verified Meta-Analytic Survey of Criterion Accuracy of Validated Polygraph Techniques
Confirms aggregated decision accuracy of 89% for single-issue testing, 85% for multiple-issue, and 87% combined across all validated techniques. The study included 38 studies satisfying qualitative and quantitative requirements, involving 32 different samples, 45 different experiments, 295 scorers who provided 11,737 scored results of 3,723 examinations [1]Verified Meta-Analytic Survey of Criterion Accuracy of Validated Polygraph Techniques
Confirms aggregated decision accuracy of 89% for single-issue testing, 85% for multiple-issue, and 87% combined across all validated techniques.

The key findings were: single-issue diagnostic testing produced an aggregated decision accuracy of 89% (confidence interval 83%-95%) with an inconclusive rate of 11% [1]Verified Meta-Analytic Survey of Criterion Accuracy of Validated Polygraph Techniques
Confirms aggregated decision accuracy of 89% for single-issue testing, 85% for multiple-issue, and 87% combined across all validated techniques. Multiple-issue testing produced an aggregated decision accuracy of 85% (confidence interval 77%-93%) with an inconclusive rate of 13% [1]Verified Meta-Analytic Survey of Criterion Accuracy of Validated Polygraph Techniques
Confirms aggregated decision accuracy of 89% for single-issue testing, 85% for multiple-issue, and 87% combined across all validated techniques. The combination of all validated techniques, excluding outliers, produced a decision accuracy of 87% (confidence interval 80%-94%) with an inconclusive rate of 13% [1]Verified Meta-Analytic Survey of Criterion Accuracy of Validated Polygraph Techniques
Confirms aggregated decision accuracy of 89% for single-issue testing, 85% for multiple-issue, and 87% combined across all validated techniques.

A comprehensive 2021 meta-analysis by Honts and colleagues, analyzing 138 datasets from Comparison Question Test studies, confirmed the test's effectiveness, finding that motivation level had a positive linear relationship with accuracy measures [20]Verified A comprehensive meta-analysis of the comparison question polygraph test
Confirms meta-analysis of 138 datasets found significant accuracy for the Comparison Question Test; motivation level had a positive linear relationship with accuracy.

Understanding the Accuracy Debate in Context

The National Research Council's 2003 report, 'The Polygraph and Lie Detection,' found that specific-incident polygraph tests can discriminate lying from truth telling at rates well above chance in untrained populations [14]Verified The Polygraph and Lie Detection
Confirms NRC found specific-incident polygraph tests can discriminate lying from truth telling at rates well above chance; notes limitations of screening polygraph. The NRC acknowledged limitations in existing research but confirmed the polygraph's utility as an investigative tool.

The APA stated that these meta-analytic findings were 'consistent with those of the National Research Council's (2003) conclusions regarding polygraph accuracy, and provide additional support for the validity of polygraph testing when conducted in accordance with APA Standards of Practice' [1]Verified Meta-Analytic Survey of Criterion Accuracy of Validated Polygraph Techniques
Confirms aggregated decision accuracy of 89% for single-issue testing, 85% for multiple-issue, and 87% combined across all validated techniques. What these figures mean for examinees is clear: when a qualified examiner uses a validated technique and follows established protocols, the polygraph is a powerful tool for credibility assessment. For a comprehensive analysis, visit are polygraph exams accurate.

Beyond Crime Dramas: Where Polygraphs Are Actually Used

Media primarily shows polygraphs in criminal investigation contexts, but professional polygraph testing serves far broader purposes. The APA's 2,700+ members operate in the private sector, law enforcement, and government fields across 58 countries, with an estimated 8,000 polygraph examiners operating in China alone [1]Verified Meta-Analytic Survey of Criterion Accuracy of Validated Polygraph Techniques
Confirms aggregated decision accuracy of 89% for single-issue testing, 85% for multiple-issue, and 87% combined across all validated techniques [20]Verified A comprehensive meta-analysis of the comparison question polygraph test
Confirms meta-analysis of 138 datasets found significant accuracy for the Comparison Question Test; motivation level had a positive linear relationship with accuracy.

Key application areas include law enforcement investigations, pre-employment screening for government and security positions (learn more in our guide to pre-employment polygraph tests), sex offender monitoring and treatment programs, national security and counterintelligence screening, private sector investigations under EPPA guidelines [15]Verified Employee Polygraph Protection Act of 1988
Confirms EPPA generally prevents private employers from using polygraph tests, with exemptions for government agencies and certain security/pharmaceutical employers, relationship and fidelity testing, and civil litigation support.

High-profile cases like the Chris Watts polygraph test and the Stormy Daniels polygraph demonstrate how polygraph testing intersects with public awareness. Even Hollywood entertainment lawyers use lie detector tests in their practice.

Correcting Your Expectations

If your understanding of polygraph testing comes primarily from television, the single most important preparation step is to reset your expectations. Here is what to focus on:

Expect a thorough, professional process lasting 90 minutes to 3 hours. The examiner will explain everything in detail and answer your questions. You will review and agree to every test question before any data collection begins. The process is designed to be calm and controlled — not confrontational. Results are not delivered on the spot. You have rights throughout the process, including the right to stop the examination.

Medical conditions, medications, and anxiety disorders should be disclosed to your examiner during the pre-test interview. Conditions like chronic pain can affect physiological readings, and a professional examiner will account for these factors. Understanding what can lead to polygraph disqualification can also help you prepare properly.

If concerns about deception or pathological lying are part of your situation, our guide on catching pathological liars with lie detector tests provides additional context.