Most Asked Questions During Lie Detector Tests

The Pre-Test Interview: Why Every Question Is Reviewed First

One of the most important protections in modern polygraph testing is that every question asked during the examination is reviewed with the examinee before any physiological recording begins. This is not optional — APA Standards of Practice §1.6.2 require the examiner to obtain informed consent, and §1.7 mandates the use of evidence-based validated testing techniques Verified APA Standards of Practice — Full Section Reference
Provides detailed APA Standards including §1.6.2 informed consent, §1.7.1 validated techniques requirement, and §1.7.7 minimum 20-second question intervals..

This means there are no surprise questions during a polygraph examination. Definitions of key terms — such as what constitutes "sexual contact," "physical intimacy," or "unauthorized" behavior — are explicitly agreed upon between the examiner and examinee during this phase. Research by Vrij and Granhag (2012) confirms that the way questions are structured significantly impacts the effectiveness of deception detection [3]Verified Eliciting cues to deception and truth: What matters are the questions asked
Confirms that question structure and interview protocols significantly impact deception detection effectiveness.. This principle underpins the entire question formulation process in professional polygraph testing.

Question Types in Polygraph Testing

Professional polygraph examinations use several distinct categories of questions, each serving a specific psychophysiological purpose [4]Verified Scientific Validity of Polygraph Testing: A Research Review and Evaluation (OTA)
Confirms the four primary question types (relevant, comparison/control, irrelevant, concealed information) and describes Reid CQT, MGQT, and ZOC formats.. The four primary question types used across validated testing techniques are:

Relevant Questions: These directly address the issue under investigation — for example, "Did you steal the missing deposit?" They are the core questions being assessed for truthfulness [5]Verified Question Formulation — Norman Ansley
Provides specific guidelines for formulating relevant, comparison, and irrelevant polygraph questions across validated testing formats..

Comparison (Control) Questions: These are designed to elicit responses from truthful examinees that can be compared against responses to relevant questions. Research by Horowitz, Kircher, Honts, and Raskin (1997) demonstrated that comparison questions produce different physiological patterns for innocent versus guilty subjects, providing empirical support for the Comparison Question Test (CQT) rationale [6]Verified The Role of Comparison Questions in Physiological Detection of Deception
Confirms comparison questions produce different physiological patterns for innocent vs. guilty subjects, supporting CQT rationale.. A field study by Ginton (2017) further confirmed the practical effectiveness of both exclusive and non-exclusive comparison questions in operational settings [7]Verified Examining Different Types of Comparison Questions in a Field Study of CQT Polygraph Technique
Confirms practical effectiveness of both exclusive and non-exclusive comparison questions in real criminal investigations..

Irrelevant Questions: Neutral questions such as "Is today Wednesday?" that establish baseline physiological responses and provide rest intervals between scored questions [4]Verified Scientific Validity of Polygraph Testing: A Research Review and Evaluation (OTA)
Confirms the four primary question types (relevant, comparison/control, irrelevant, concealed information) and describes Reid CQT, MGQT, and ZOC formats..

Concealed Information Questions: Used to determine whether a suspect possesses knowledge that only a guilty person would have — for example, knowledge of specific details about a crime scene [4]Verified Scientific Validity of Polygraph Testing: A Research Review and Evaluation (OTA)
Confirms the four primary question types (relevant, comparison/control, irrelevant, concealed information) and describes Reid CQT, MGQT, and ZOC formats..

All scored questions in professional polygraph examinations follow a yes/no format, meaning the examinee answers with a simple "yes" or "no." This binary structure is essential for clean physiological measurement and is a core requirement of validated testing techniques recognized by the APA [1]Verified APA Standards of Practice (Amended August 23, 2024)
Confirms APA Standards of Practice section numbering (1.5.1, 1.6.2, 1.7.1, 1.7.7, 1.7.11) and requirements for question review, informed consent, and validated techniques..

Accuracy of Validated Questioning Techniques

The effectiveness of properly formulated polygraph questions is supported by substantial research. The APA's comprehensive 2011 meta-analysis reviewed 38 studies involving 3,723 examinations and 11,737 scored results [8]Verified Meta-Analytic Survey of Criterion Accuracy of Validated Polygraph Techniques
Confirms 89% single-issue accuracy, 85% multi-issue accuracy, and 87% combined accuracy across 38 studies and 3,723 examinations.. The analysis found that single-issue diagnostic techniques produced an aggregated decision accuracy of 89% (confidence interval 83%–95%), while multiple-issue techniques produced 85% accuracy (confidence interval 77%–93%) [8]Verified Meta-Analytic Survey of Criterion Accuracy of Validated Polygraph Techniques
Confirms 89% single-issue accuracy, 85% multi-issue accuracy, and 87% combined accuracy across 38 studies and 3,723 examinations.. The combined accuracy across all validated techniques was 87% [8]Verified Meta-Analytic Survey of Criterion Accuracy of Validated Polygraph Techniques
Confirms 89% single-issue accuracy, 85% multi-issue accuracy, and 87% combined accuracy across 38 studies and 3,723 examinations..

A 2021 meta-analysis by Honts and colleagues captured 138 datasets and confirmed that reviews "generally produced overall accuracy estimates of over 85%" [9]Verified A comprehensive meta-analysis of the comparison question polygraph test
Confirms reviews generally produced overall accuracy estimates of over 85% across 138 datasets.. Research has also shown that between-chart discussion of comparison questions significantly improves accuracy, a procedural refinement documented by Honts (1999) that became standard practice in modern CQT administration [10]Verified The Discussion of Comparison Questions Between List Repetitions Is Associated with Increased Test Accuracy
Confirms between-chart discussion of comparison questions significantly improved CQT accuracy, becoming standard practice..

Studies on directed-lie comparison questions have demonstrated fewer false positives while maintaining detection of deception. Research by Driscoll, Honts, and Jones (1987) supported the adoption of directed lies as standard practice [11]Verified Directed Lie Comparison Questions in Polygraph Testing
Confirms directed-lie comparison questions produced fewer false positives while maintaining detection of deception., and more recent work by Honts, Handler, Shaw, and Gougler (2015) suggests these modern formats may be more robust against deliberate manipulation attempts [12]Verified Directed Lie Comparison Questions and Countermeasure Resistance
Confirms modern directed-lie testing formats may be more robust against deliberate manipulation attempts..

When Infidelity Polygraphs Are Used

Infidelity polygraphs are among the most commonly requested private examinations. They are initiated by partners or couples seeking to address suspected cheating, hidden contact, or secret relationships. The APA publishes a Model Policy for Domestic Polygraph Testing (updated and approved August 2024) that provides specific guidance for examiners conducting relationship-related examinations [13]Verified APA Policies and Model Policies
Confirms APA publishes Model Policies for Domestic Polygraph Testing, PCSOT, Screening Examinations, Paired Testing, and Quality Assurance..

The specific date range and definitions of physical acts are agreed upon with the examinee during the pre-test interview. Brackets like [date] or [person's name] shown below are placeholders filled in before the exam begins. Terms such as "sexual intercourse," "sexual contact," and "sexual act" are explicitly defined so both examiner and examinee share identical understanding. Learn more about how lie detectors address emotional infidelity in our guide on whether a lie detector can prove emotional cheating. For couples considering ongoing verification, explore the benefits of annual polygraph tests in marriage.

Common Infidelity Polygraph Questions

1. Since [specified date], have you had sexual intercourse with someone other than your partner? — The anchor question in most infidelity exams. The agreed date is established in the pre-test interview so the timeframe is unambiguous.

2. Since [specified date], have you engaged in any sexual act with someone other than [partner's name]? — A broader formulation covering sexual activity beyond intercourse. The definition of "sexual act" is confirmed in the pre-test interview.

3. Since the beginning of your relationship, have you kissed another person with romantic intent? — "Romantic intent" is defined with the examinee before testing to distinguish from social or cultural greetings.

4. Have you used a dating app or website to arrange a meeting with someone other than your partner? — Targets digital infidelity behavior — app use that progressed to actual contact, not passive browsing.

5. Have you exchanged sexually explicit messages or images with anyone other than your partner since [date]? — Covers digital sexual communication. Defined to exclude accidental receipt of unsolicited content.

6. Have you lied to your partner about your whereabouts in order to meet someone else? — Addresses deliberate deception and concealment of meetings with a third party.

7. Have you told another person you were not in a relationship when in fact you were? — Assesses active concealment of relationship status.

8. Have you spent the night away from home with a person you were physically intimate with, other than your partner? — Targets overnight encounters. "Physically intimate with" is defined in the pre-test interview.

9. Have you had sexual contact with [named person] since [date]? — A specific named-person question used when the partner suspects a particular individual.

10. Are you currently in a secret romantic or sexual relationship with someone other than your partner? — Present-tense question assessing whether an active parallel relationship exists at the time of testing.

11. Have you deliberately deleted messages, call logs, or photos to hide contact with another person from your partner? — Assesses active digital concealment, a factual behavior relevant to trust and deception even if no physical contact occurred.

EPPA Compliance and Exemptions

Pre-employment polygraph testing in the private sector is governed by the Employee Polygraph Protection Act of 1988 (EPPA). Effective December 27, 1988, EPPA prohibits most private employers from using lie detector tests for pre-employment screening or during the course of employment [14]Verified Employee Polygraph Protection Act of 1988 — 29 CFR Part 801
Confirms EPPA prohibits most private employers from using polygraph tests, with exemptions for government agencies, security firms, and specific-incident investigations.. Federal, state, and local government agencies are exempt from the Act [14]Verified Employee Polygraph Protection Act of 1988 — 29 CFR Part 801
Confirms EPPA prohibits most private employers from using polygraph tests, with exemptions for government agencies, security firms, and specific-incident investigations..

However, EPPA includes limited exemptions that permit polygraph testing by private employers in specific circumstances [15]Verified Employee Polygraph Protection Act — APA Summary
Confirms EPPA exemptions for security firms, drug manufacturers, and federal contractors, and details employer/examiner compliance requirements.. These include security firms (armored car companies, alarm system providers, security guard companies), pharmaceutical manufacturers and distributors, federal contractors engaged in national security functions, and employers conducting ongoing investigations involving economic loss where specific conditions are met [15]Verified Employee Polygraph Protection Act — APA Summary
Confirms EPPA exemptions for security firms, drug manufacturers, and federal contractors, and details employer/examiner compliance requirements.. For a comprehensive overview of this legislation, see our full legislative history of the Employee Polygraph Protection Act.

All pre-employment polygraph examinations — even those conducted under EPPA exemptions — must comply with strict procedural safeguards including pre-test, testing, and post-test requirements [16]Verified EPPA Poster — Department of Labor
Confirms EPPA permits polygraph testing of employees reasonably suspected of involvement in workplace incidents resulting in economic loss.. Questions used by federal agencies, security firms, and EPPA-exempt private employers focus on criminal history, drug use, theft, and application honesty.

Application Honesty & Background Questions

1. Did you tell the truth on your employment application? — Foundational integrity question establishing whether the candidate accurately represented their credentials, history, and qualifications.

2. Have you ever deliberately withheld information from an employment application? — Addresses intentional omissions including criminal history, disciplinary actions, or undisclosed terminations.

3. Have you ever been fired or asked to resign from any job? — Assesses undisclosed termination history. Examiners include "asked to resign" to capture negotiated departures that are functionally terminations.

4. Since the age of 16, have you been convicted of a criminal offence? — Covers adult and near-adult criminal history relevant to employment risk assessment.

5. Are you seeking employment with this company for any reason other than legitimate employment? — Screens for infiltration, industrial espionage, or competitive intelligence gathering. Particularly important in security, financial, and government-adjacent roles.

Drug & Substance Use Questions

6. During the past year, have you used cannabis more than once per month? — Uses a frequency threshold rather than any historical use, focusing on current patterns rather than distant one-time events. For more on how cannabis law intersects with polygraph testing, see our guide on polygraphs and cannabis in the workplace.

7. Have you used any illegal drug other than cannabis in the past year? — Separates cannabis use (subject to varying legal status by state) from other controlled substances for cleaner question scoping.

8. Have you misused or abused any prescription medication in the last year? — Covers non-prescribed use, deliberate overuse, or use of another person's prescription.

9. Have you sold or distributed any illegal drug or controlled substance in the past five years? — Distinguishes personal use from distribution activity, which carries materially different legal and security risk profiles.

10. Have you used any illegal drug while on duty at a previous employer? — Narrows the context to workplace drug use, a more specific and higher-risk behavior than general use outside work hours.

Workplace Conduct & Theft Questions

11. Have you ever stolen money or property worth more than $500 from any employer? — The monetary threshold focuses on significant theft. Examiners may adjust the dollar amount based on industry context.

12. Have you ever falsified any records, reports, or documents for an employer? — Addresses document fraud including expense reports, timesheets, and safety records.

13. Have you ever shared confidential company information with an unauthorised person? — Covers information security and trade secret violations. Key terms are defined in the pre-test interview.

14. Have you ever physically assaulted or threatened a colleague at work? — Workplace safety question relevant to security and law enforcement employers.

15. Have you deliberately lied to any of the questions asked in this examination? — Final validation question. A strong physiological response here is treated as a significant indicator by the examiner. Research by Matte (2011) found that 62.9% of confirmed deceptive cases showed higher scores in subsequent charts, supporting the reliability of question-by-question tracking across an examination [17]Verified Effect of Habituation to Least Threatening Zone Questions on Comparison Questions in Psychophysiological Veracity Examinations
Confirms 62.9% of confirmed deceptive cases showed higher scores in subsequent charts, supporting differential habituation theory..

Specific-Incident Examination Questions

These questions are used in specific-incident examinations where a known theft, fraud, or financial crime has occurred. The incident details (date, location, amount) are defined in the pre-test interview. Private-sector employers may use these under EPPA's ongoing investigation exemption, provided the employer meets specific conditions: the test must be administered in connection with an ongoing investigation involving economic loss, the employee had access to the property in question, and the employer has reasonable suspicion of the employee's involvement [14]Verified Employee Polygraph Protection Act of 1988 — 29 CFR Part 801
Confirms EPPA prohibits most private employers from using polygraph tests, with exemptions for government agencies, security firms, and specific-incident investigations.. For a real-world example of how polygraph testing resolves family theft situations, see our Connecticut family theft case study.

1. Did you steal [item/amount] from [location] on [date range]? — The core incident question. All specific details are agreed upon in the pre-test interview to ensure the question is factual and unambiguous.

2. Do you know who stole [item] from [location]? — Directed at witnesses or colleagues who may have knowledge of the perpetrator. A key concealed-knowledge question.

3. Did you take any money from the cash register at [workplace] during [time period]? — Specific to till or cash theft, one of the most common specific-incident examination types in retail and hospitality.

4. Have you ever taken property from this business for personal use without authorisation? — Broader than a single incident, used to establish a pattern of unauthorised appropriation.

5. Did you authorise or approve a transaction you knew to be fraudulent? — Targets financial fraud in a management capacity including expense fraud, false vendor payments, or unauthorised transfers.

6. Did you receive any payment or benefit in exchange for information about [company/client]? — Addresses corporate espionage and paid information leaks.

7. Did you help another person steal from [company] during [time period]? — Addresses complicity and aiding, commonly used when the primary suspect is identified but the full scope of involvement is unclear.

8. Are you concealing any knowledge of who committed this theft? — A concealed-information formulation that does not accuse the examinee of theft but assesses whether they are protecting a perpetrator.

9. Have you stolen from this employer on more than one occasion during [time period]? — Establishes frequency of theft beyond the specific incident, relevant to damage assessment and prosecution decisions.

10. Did you take the [specific item] that is reported missing from [location]? — Item-specific formulation for property theft, suitable for equipment, inventory, or valuables.

Examinee-Initiated Defence Examinations

False accusation polygraph examinations are initiated by individuals who have been falsely accused and wish to demonstrate their innocence through a voluntary test. These results are typically presented to the party making the accusation or to legal representatives. Defence polygraph testing has become increasingly valuable in legal proceedings, and the research supports its effectiveness — Dawson's (1981) study found that professional actors' mental countermeasures proved completely ineffective, with 100% of guilty subjects correctly detected [18]Verified Physiological detection of deception: Measurement of responses to questions and answers during countermeasure maneuvers
Confirms professional actors' mental countermeasures proved completely ineffective with 100% detection of guilty subjects.. For more on how polygraphs intersect with entertainment and legal contexts, see our guide on Hollywood and the polygraph.

1. Did you [commit the specific act you are accused of] on [date range]? — The core denial question. The specific allegation is the anchor of the examination, with wording carefully refined in the pre-test interview.

2. Did you have any physical contact with [named person] on [date]? — Named-person/named-date formulation used when the allegation involves a specific person at a specific time.

3. Have you ever threatened [named person] or caused them to fear for their safety? — Relevant to harassment, stalking, or intimidation allegations. "Threatened" is defined to mean deliberate, intentional communication of threat.

4. Did you fabricate or exaggerate any part of your account of the events described to [authority/person]? — Establishes truthfulness of the examinee's own stated version of events.

5. Have you ever deliberately made a false statement about [named person] to damage their reputation? — Addresses defamation and false reporting.

6. Were you present at [location] at the time the alleged incident took place? — Establishes or eliminates the opportunity element. Presence at the scene is a gateway question.

7. Did you lie to the police or any official body about the events in question? — Assesses whether the examinee's official account is truthful.

8. Is there any part of the allegation made against you that is truthful? — A comprehensive sweep question used when the allegation is multi-faceted.

Sensitivity Protocols and Question Standards

Sexual allegation examinations are among the most sensitive polygraph tests conducted. They are used in defence or prosecution-support contexts involving allegations of sexual misconduct. All terms are carefully defined in the pre-test interview and questions are limited to strictly factual, binary acts.

These examinations are conducted with strict confidentiality and examiner sensitivity protocols. All sexual acts referenced in questions are explicitly defined in the pre-test interview. No assumptions are made about the examinee's understanding of terminology. The APA Standards of Practice require examiners to make reasonable efforts to determine that the examinee is a suitable candidate for testing and to consider any medical, physical, or mental conditions that may affect the examination [1]Verified APA Standards of Practice (Amended August 23, 2024)
Confirms APA Standards of Practice section numbering (1.5.1, 1.6.2, 1.7.1, 1.7.7, 1.7.11) and requirements for question review, informed consent, and validated techniques..

1. Did you have any sexual contact with [named person] on [date range]? — The core question in most sexual allegation examinations. "Sexual contact" is explicitly defined.

2. Did you touch [named person] in a sexual manner without their consent? — "Sexual manner" and "consent" are both carefully defined prior to examination.

3. Did you expose yourself to [named person/group] on [date range]? — Used in indecent exposure allegations. Factual and binary.

4. Did you send sexually explicit messages to [named person] without their prior consent? — Digital sexual harassment question addressing unsolicited explicit communication.

5. Have you ever recorded [named person] in a sexual or intimate situation without their knowledge? — Addresses non-consensual recording with clear legal implications.

6. Did you engage in any sexual act with [named person] while they were unable to consent due to age, intoxication, or incapacity? — The specific incapacity is identified in the pre-test interview.

7. Did the sexual contact between you and [named person] occur with their full and informed consent? — An examinee-affirmative formulation used when the accused acknowledges contact occurred but asserts it was consensual.

PCSOT Programme Structure and Standards

PCSOT examinations are court-ordered or probation-mandated polygraph tests for individuals on a sex offender supervision programme. The APA publishes a dedicated Model Policy for Post-Conviction Sex Offender Testing (September 2021) that governs these examinations [19]Verified APA Model Policy for Post-Conviction Sex Offender Testing (September 2021)
Confirms PCSOT programme goals, four examination types, ethical requirements, and multidisciplinary collaboration standards.. PCSOT examiners must complete specialized training — typically a minimum of 40 hours of APA-approved instruction — beyond their basic polygraph education [20]Verified PEAK PCSOT Training Course
Confirms PCSOT certification requires a minimum of 40 hours of specialized APA-approved instruction..

The APA defines a PCSOT Examiner as "a polygraph examiner who conducts examinations of sex offenders as a condition of treatment, probation, parole or supervised release, and who has completed specialized training consistent with APA standards" [21]Verified APA Standards of Practice — PCSOT Examiner Definition
Confirms APA definition of PCSOT Examiner as requiring specialized training consistent with APA standards.. The primary goal of PCSOT is to increase public safety by providing additional information to supervision and treatment teams [19]Verified APA Model Policy for Post-Conviction Sex Offender Testing (September 2021)
Confirms PCSOT programme goals, four examination types, ethical requirements, and multidisciplinary collaboration standards.. PCSOT examiners use four basic types of examinations: instant offense exams, sexual history disclosure exams, maintenance exams, and sexual offense monitoring exams [19]Verified APA Model Policy for Post-Conviction Sex Offender Testing (September 2021)
Confirms PCSOT programme goals, four examination types, ethical requirements, and multidisciplinary collaboration standards.. For details on testing frequency, see our guide on PCSOT polygraph frequency.

1. Since your last examination, have you had any unauthorised contact with a minor? — One of the most common PCSOT compliance questions. "Unauthorised contact" and "minor" are defined per the supervision order conditions.

2. Since your last examination, have you accessed any sexually explicit material involving minors? — Addresses online or physical material access, run as a standard compliance question across supervision cycles.

3. Have you lied to your treatment provider about your thoughts or behaviour since your last session? — Treatment honesty question. Deception in therapy is a compliance violation in most PCSOT programmes.

4. Have you engaged in any sexual behaviour involving a person under the age of [X] that you have not yet disclosed? — Full disclosure question designed to surface undisclosed victims or past offences.

5. Since your release, have you violated any condition of your supervision order? — Broad compliance sweep used at the start of periodic maintenance examinations.

6. Have you deliberately withheld any information from your probation officer or treatment provider since your last examination? — Assesses concealment from supervisory authorities.

Monitoring Programme Questions

Drug compliance polygraphs are used in sobriety-programme monitoring, court-ordered compliance testing, drug-free workplace investigations, and treatment programme verification. Questions focus on use, possession, and distribution within defined time periods.

1. Have you used any illegal drug or controlled substance in the past [X] days? — Standard periodic compliance question. The time window (typically 30, 90, or 180 days) is defined by programme requirements.

2. Have you consumed any alcohol since your last examination? — Used in alcohol-abstinence compliance programmes. Any consumption constitutes a violation regardless of quantity.

3. Have you been in the presence of illegal drugs in the past [X] days? — Assesses proximity to drug use, relevant in programmes requiring avoidance of drug-using social environments.

4. Have you provided a drug test sample that was not your own? — Addresses sample substitution, a specific factual act.

5. Have you purchased or obtained any illegal drugs for personal use in the past [X] months? — Distinguishes consumption from acquisition, both of which are violations in most drug-free programmes.

6. Have you lied to your treatment provider or case manager about your substance use since your last session? — Treatment honesty question used alongside urine testing for a complete compliance picture.

7. Have you sold or given any controlled substance to another person during the past [X] months? — Covers distribution in addition to personal use, a significantly more serious violation.

Types of Federal Polygraph Examinations

Federal polygraph examinations are used by agencies including the CIA, FBI, NSA, and DHS, as well as government contractors requiring security clearance. There are two primary types of federal polygraph examinations [22]Verified Polygraph Examinations for Federal Employees and Contractors
Confirms two primary types of federal polygraph examinations: CI Polygraph and Lifestyle Polygraph, with description of each type's scope.:

Counterintelligence (CI) Polygraph: The most common type, focused on screening for espionage, sabotage, terrorism, unauthorized disclosure of classified information, and unauthorized contacts with foreign nationals [22]Verified Polygraph Examinations for Federal Employees and Contractors
Confirms two primary types of federal polygraph examinations: CI Polygraph and Lifestyle Polygraph, with description of each type's scope.. Agencies such as the NSA historically used the Relevant/Irrelevant (R/I) screening format for CI examinations [23]Verified The Polygraph and Lie Detection — National Research Council
Confirms question types used in polygraph testing (relevant, comparison, irrelevant, concealed information) and describes R/I format use at NSA..

Lifestyle (Full-Scope) Polygraph: Covers broader personal topics including sexual conduct, alcohol and drug use, illegal conduct, mental health, family relationships, and compulsive behaviors [22]Verified Polygraph Examinations for Federal Employees and Contractors
Confirms two primary types of federal polygraph examinations: CI Polygraph and Lifestyle Polygraph, with description of each type's scope.. A Full-Scope polygraph combines both CI and Lifestyle components [24]Verified Security Clearance Types and Polygraph Requirements
Confirms CIA requires all employees to pass a full-scope polygraph; describes three types of polygraph tests (CI, Lifestyle, Full-Scope)..

Federal examiners use several validated testing formats including the Zone Comparison Test (ZCT), the Air Force Modified General Question Test (AFMGQT), and the Relevant/Irrelevant (R/I) screening format, as documented in the Federal Psychophysiological Detection of Deception Examiner Handbook [25]Verified Federal Psychophysiological Detection of Deception Examiner Handbook
Confirms federal test formats including Zone Comparison Test, You-Phase ZCT, AFMGQT, and R/I screening test, with detailed question construction guidelines.. Most federal screening examinations take two to four hours [26]Verified How to Prepare for a Security Clearance Polygraph Examination
Confirms most federal screening exams take two to four hours, with audio and video recordings, and describes three phases of the exam.. For a deeper look into how federal agencies use polygraph testing, see our report on the FBI's 2025 polygraph crackdown. The history of polygraph use in government contexts extends internationally — learn about Korea's military origins and modern corporate polygraph use.

Common Federal Security Clearance Questions

1. Have you ever had any contact with a foreign intelligence service? — Core counterintelligence question. "Contact" is defined to mean deliberate, non-incidental communication with foreign intelligence agents.

2. Have you ever provided classified information to an unauthorised person? — Addresses the primary risk in security clearance contexts. Improper disclosure of classified documents is one of the most significant examination areas [22]Verified Polygraph Examinations for Federal Employees and Contractors
Confirms two primary types of federal polygraph examinations: CI Polygraph and Lifestyle Polygraph, with description of each type's scope..

3. Have you ever committed a serious crime that has not been reported? — Covers undisclosed criminal history relevant to security risk assessment.

4. Have you deliberately falsified any part of your security forms? — Directly targets SF-86 form integrity, which is the starting point for all federal background investigations [26]Verified How to Prepare for a Security Clearance Polygraph Examination
Confirms most federal screening exams take two to four hours, with audio and video recordings, and describes three phases of the exam..

5. Have you ever been involved with illegal drugs or narcotics? — Drug use screening question covering both past and current use.

6. Have you ever had any secret contacts with foreign governments or agencies? — Broader counterintelligence question capturing unofficial or informal foreign government contacts.

7. Have you ever stolen money or property from a government employer? — Standard relevant question for federal pre-employment and periodic reinvestigation screening.

8. Are you withholding any information about your involvement in activities that could compromise national security? — Broad counterintelligence sweep question used across multiple examination types.

To understand how the stim test (acquaintance test) works in federal and private examinations, see our dedicated guide. The Backster Zone Comparison Test remains one of the most influential question formats in modern polygraph history.

Key APA Standards of Practice Requirements

The American Polygraph Association, established in 1966, is the world's leading association dedicated to evidence-based credibility assessment, with over 2,700 members worldwide [27]Verified American Polygraph Association — About
Confirms APA established in 1966 with 2,700+ members, promoting evidence-based scientific methods for credibility assessment.. The current APA Standards of Practice were amended on August 23, 2024 [28]Verified APA Bylaws and Standards
Confirms Standards of Practice effective August 23, 2024 and Bylaws adopted August 27, 2019 amended March 14, 2025.. Key requirements relevant to question formulation and examination conduct include:

§1.5.1 — Prior to an examination, the examiner shall dedicate sufficient time to identify and discuss the examination issues and potential problem areas [1]Verified APA Standards of Practice (Amended August 23, 2024)
Confirms APA Standards of Practice section numbering (1.5.1, 1.6.2, 1.7.1, 1.7.7, 1.7.11) and requirements for question review, informed consent, and validated techniques..

§1.6.2 — The examiner shall obtain the informed consent of the examinee prior to testing [1]Verified APA Standards of Practice (Amended August 23, 2024)
Confirms APA Standards of Practice section numbering (1.5.1, 1.6.2, 1.7.1, 1.7.7, 1.7.11) and requirements for question review, informed consent, and validated techniques..

§1.7.1 — The member polygraph examiner shall use evidence-based validated testing techniques [1]Verified APA Standards of Practice (Amended August 23, 2024)
Confirms APA Standards of Practice section numbering (1.5.1, 1.6.2, 1.7.1, 1.7.7, 1.7.11) and requirements for question review, informed consent, and validated techniques..

§1.7.7 — Questions used in the assessment of truth and deception shall be followed by time intervals of not less than 20 seconds from question onset to question onset [1]Verified APA Standards of Practice (Amended August 23, 2024)
Confirms APA Standards of Practice section numbering (1.5.1, 1.6.2, 1.7.1, 1.7.7, 1.7.11) and requirements for question review, informed consent, and validated techniques..

§1.7.11 — Examinations shall be scheduled for not less than 90 minutes. A member polygraph examiner shall not conduct more than five examinations of any type in one day [1]Verified APA Standards of Practice (Amended August 23, 2024)
Confirms APA Standards of Practice section numbering (1.5.1, 1.6.2, 1.7.1, 1.7.7, 1.7.11) and requirements for question review, informed consent, and validated techniques..

Additionally, the APA publishes model policies for specific examination contexts including domestic polygraph testing, screening examinations in public safety employment, PCSOT, and paired testing [13]Verified APA Policies and Model Policies
Confirms APA publishes Model Policies for Domestic Polygraph Testing, PCSOT, Screening Examinations, Paired Testing, and Quality Assurance.. Research by Honts and Raskin (1992) challenged the assumption that "yes" answers to comparison questions reduce accuracy, finding no significant accuracy difference — a finding that influenced modern question formulation practices [29]Verified Effectiveness of Control Questions Answered 'Yes': Dispelling a Polygraph Myth
Confirms no significant accuracy difference between yes and no answers to control questions, dispelling a widely held examiner belief.. The ongoing evolution of question formulation is further supported by Amsel's (1999) Israeli field study, which found that both exclusive and non-exclusive comparison question formats produce comparable accuracy rates Verified Exclusive or Nonexclusive Comparison Questions: A Comparative Field Study
Confirms both exclusive and non-exclusive comparison question formats produce comparable accuracy rates in real criminal investigations..

For emerging technologies in deception detection that may complement traditional polygraph questioning, explore our guide on EEG and brain-based lie detection.