Sacrifice Relevant Questions in Polygraph Testing

Definition and Core Function

A sacrifice relevant question — abbreviated SR, SRQ, or sometimes SR1 in examiner notation — is the first relevant question presented to an examinee during the in-test (chart collection) phase of a polygraph examination. Unlike the other relevant questions in the sequence, the sacrifice relevant question is deliberately excluded from numerical scoring and final diagnostic opinion [1]Verified Sacrifice Relevant Question (Glossary)
Confirms the sacrifice relevant question was introduced by Backster, is not numerically scored, and its role is to dissipate innocent responses to the first relevant question. It is, in every functional sense, "sacrificed" from the analysis.

The sacrifice relevant question was introduced by Cleve Backster and is used in most forms of the Zone Comparison Test (ZCT) as well as other comparison question techniques [2]Verified Blood Pressure Rises on Relevant Questions in Lie Detection: Sometimes an Indication of Innocence Not Guilt
Confirms innocent examinees demonstrate significant blood pressure elevations on relevant questions driven by anxiety about false accusation, supporting the need for SR questions. Its putative role is to dissipate the responses of innocent persons who frequently react to the first relevant question [2]Verified Blood Pressure Rises on Relevant Questions in Lie Detection: Sometimes an Indication of Innocence Not Guilt
Confirms innocent examinees demonstrate significant blood pressure elevations on relevant questions driven by anxiety about false accusation, supporting the need for SR questions. The SR question is not numerically scored [2]Verified Blood Pressure Rises on Relevant Questions in Lie Detection: Sometimes an Indication of Innocence Not Guilt
Confirms innocent examinees demonstrate significant blood pressure elevations on relevant questions driven by anxiety about false accusation, supporting the need for SR questions.

The concept may sound counterintuitive: why would a trained examiner include a question and then ignore the data it produces? The answer lies in decades of psychophysiological research and a well-established principle known as the anticlimax dampening concept (ADC). The SR question serves a critical structural purpose — it absorbs the examinee's initial spike of arousal that comes from hearing the first relevant question about the topic under investigation, allowing subsequent relevant questions to produce cleaner, more diagnostically useful data.

Early research by Richard O. Arther demonstrated that innocent examinees can show significant blood pressure elevations on relevant questions driven by anxiety about false accusation rather than any fear of detection [3]Verified The Polygraph and Lie Detection (Appendix A)
Confirms Backster developed the Zone Comparison Test (1963), the first CQT to incorporate numerical scoring, and that the ZCT is used by federal agencies. This finding reinforced the need for a structural buffer like the SR question — because elevated responses to relevant questions do not necessarily indicate deception.

The Meaning Behind the Terminology

The terminology is intentionally vivid. The word "sacrifice" conveys that this question is knowingly offered up — given to the examination process with the understanding that its data will be discarded. The examiner invests time formulating it, presents it to the examinee during the pretest interview, includes it in every chart collection, and then deliberately sets aside its physiological data during scoring.

The metaphor works on two levels. First, the question itself is sacrificed from the scoring pool. Second, it serves as a protective sacrifice for the integrity of the overall examination — advancing the accuracy of the test by absorbing physiological noise that would otherwise contaminate the scored data.

The terminology has been standard in polygraph science since the early 1960s, when Cleve Backster formalized the concept as part of his Zone Comparison Test (ZCT). The Zone Comparison Test, which was developed by Backster (1963), is named for the three "zones" or blocks of time during the test: the relevant questions (the red zone), the probable-lie comparison questions (the green zone), and other questions (the black zone) [4]Verified PDD 505 Methods II: Zone Comparison Test (DACA Training Material)
Confirms the ZCT question sequence including sacrifice relevant questions, and documents Backster's 1960 anticlimax dampening concept and the seven-position scoring scale. The term "sacrifice relevant" was chosen to distinguish this question from standard scored relevant questions and from irrelevant or comparison questions in the sequence.

Backster's Foundational Theory

The theoretical engine that drives the sacrifice relevant question is the anticlimax dampening concept, or ADC. Backster first introduced the ADC concept in 1960 as part of his annual school research series on polygraph technique trends [5]Verified Anticlimax Dampening Concept: It Does Exist
Confirms the anticlimax dampening concept is based on Backster's psychological set theory and demonstrates its practical significance in multi-issue testing. It was later published formally in the journal Polygraph in 1974 [5]Verified Anticlimax Dampening Concept: It Does Exist
Confirms the anticlimax dampening concept is based on Backster's psychological set theory and demonstrates its practical significance in multi-issue testing. The ADC is based on Backster's overarching concept of "psychological set" — that a person's fears, anxieties, and apprehensions will be directed toward the situation that holds the greatest threat to their well-being or self-preservation at that point in time [6]Verified The Role of Comparison Questions in Physiological Detection of Deception
Mock crime study with 120 participants confirming comparison questions produce different physiological patterns for innocent vs. guilty subjects, supporting the CQT rationale.

In the context of a polygraph examination, the ADC operates as follows: a deceptive examinee's most threatening stimulus is the relevant question that most directly addresses the issue they are lying about. Their autonomic nervous system will mobilize its strongest response for that question, dampening reactions to comparison questions. A truthful examinee's most threatening stimulus is typically the comparison question — because it raises broader moral or behavioral concerns that the examinee is uncertain about. Their relevant question responses tend to be relatively flat because they are not lying about the specific issue. Research has confirmed that comparison questions produce different physiological patterns for innocent versus guilty subjects, providing empirical support for the CQT rationale [7]Verified Relevant Issue Gravity (RIG) Strength: A New Concept in PDD
Introduced the Relevant Issue Gravity concept, explaining why the psychological weight of relevant questions influences CQT accuracy.

But here is the critical caveat: the first relevant question in any series tends to provoke a heightened reaction in both truthful and deceptive examinees, simply because it represents the first direct confrontation with the subject matter. This novelty effect — sometimes called the orienting response or first-stimulus effect — is well documented in psychophysiology literature. The ADC predicts this response and accounts for it by designating the first relevant question as a sacrifice. Its response is expected to be artificially inflated, so it is excluded from the scoring equation.

Learn more about the theory in our dedicated article on the anticlimax dampening concept (ADC) in polygraph testing.

ADC in Multi-Issue Testing

In a polygraph examination, a guilty examinee's concern over an intense relevant question may result in a full or partial dampening of responses to other relevant questions about deception, as well as to comparison questions [6]Verified The Role of Comparison Questions in Physiological Detection of Deception
Mock crime study with 120 participants confirming comparison questions produce different physiological patterns for innocent vs. guilty subjects, supporting the CQT rationale. This is particularly important in multi-issue or multifaceted tests. The Relevant Issue Gravity (RIG) concept, introduced by Avital Ginton, further explains that the psychological weight of relevant questions influences CQT accuracy, and that serious criminal cases produce stronger physiological discrimination [8]Verified Question Formulation: Irrelevant, Relevant, and Comparison Questions
Establishes that all polygraph techniques utilize four question categories, each serving a distinct purpose, with questions answerable by yes/no addressing single issues. These theoretical advances build on Backster's original ADC framework and reinforce the importance of the sacrifice relevant question in managing initial reactivity.

Complete Question Taxonomy

A properly conducted polygraph examination uses several distinct types of questions, each serving a specific structural and diagnostic function. All polygraph techniques utilize four principal question categories, each serving a distinct purpose — and understanding them is essential for appreciating where the sacrifice relevant question fits [9]Verified Exclusive or Nonexclusive Comparison Questions: A Comparative Field Study
Israeli field study finding both exclusive and non-exclusive comparison question formats produced comparable accuracy rates in real criminal investigations. For a deeper look at each type, see our guide to what questions can be asked in a private lie detector test.

Irrelevant Questions (I): Neutral, non-threatening questions (e.g., "Is today Tuesday?") that establish a physiological baseline and provide recovery periods between emotionally significant questions.

Sacrifice Relevant Question (SR): The first relevant question in the series. Addresses the general topic under investigation. Not scored. Absorbs initial reactivity per the anticlimax dampening concept.

Relevant Questions (R): Directly address the specific issue under investigation (e.g., "Did you steal the missing $5,000?"). These are the scored questions that determine the examination outcome.

Comparison Questions (C): Also called "probable lie comparison" questions. Cover broader behavioral areas to provoke responses in truthful examinees, providing a comparison baseline against relevant question responses. Research has shown that both exclusive and non-exclusive comparison questions produce comparable accuracy rates in real criminal investigations [10]Verified Examining Different Types of Comparison Questions in a Field Study of CQT Polygraph Technique
Field study providing evidence for the practical effectiveness of both exclusive and non-exclusive comparison questions in operational settings[11]Verified Backster and Federal Scoring Compared
Confirms Backster was the first to apply a positive and negative scoring system comparing relevant questions against comparison questions.

Symptomatic Questions (SY): Detect whether the examinee is focused on an outside concern unrelated to the test issue. Typically unscored but diagnostically important for identifying contaminated charts.

Standard ZCT Question Sequence Example

In a standard Zone Comparison Test, the question sequence typically follows this pattern:

1. Irrelevant question (I1) 2. Sacrifice relevant question (SR) 3. Irrelevant question (I2) 4. Comparison question (C1) 5. Relevant question (R1) — scored 6. Irrelevant question (I3) 7. Comparison question (C2) 8. Relevant question (R2) — scored 9. Comparison question (C3) 10. Relevant question (R3) — scored 11. Symptomatic question (SY)

Notice that the sacrifice relevant question comes before the first scored relevant-comparison pair. This positioning is structural, required by the technique, and essential to the validity of the data collected from the scored pairs that follow. The Defense Academy for Credibility Assessment (DACA) specifies this order in its ZCT training materials, reviewing questions in the order: (1) Sacrifice Relevant, (2) Relevant, (3) Comparison, (4) Irrelevant, and (5) Symptomatic questions [5]Verified Anticlimax Dampening Concept: It Does Exist
Confirms the anticlimax dampening concept is based on Backster's psychological set theory and demonstrates its practical significance in multi-issue testing. All questions — including the SR — are reviewed with the examinee before the test to ensure transparency.

Psychophysiological Rationale for Placement

The placement of the sacrifice relevant question is precise and standardized within each validated technique. It always occupies the position of the first relevant question in the series, typically appearing after one or two irrelevant questions that serve to settle the examinee's baseline physiology at the start of chart collection.

The rationale for this specific placement is rooted in multiple psychophysiological principles:

Orienting response: When an examinee encounters the first stimulus directly related to the investigation, the brain's orienting response fires — an automatic neurological reaction to novel, significant information. This response is involuntary and occurs regardless of deception or truthfulness.

Anticipatory anxiety: Even after a thorough pretest interview where all questions are reviewed, the transition from irrelevant questions to the first relevant question creates a psychological shift. The examinee knows the "real" portion of the test has begun, and this awareness itself produces measurable arousal.

Habituation curve: Psychophysiology research demonstrates that autonomic responses to repeated stimuli diminish over presentations. By placing the SR first, the strongest novelty-driven response is captured and discarded, while subsequent relevant questions benefit from the examinee's partial habituation to the relevant topic.

In multi-issue screening tests — such as those used in some pre-employment polygraph examinations — the sacrifice relevant question addresses the broadest or most general aspect of the screening topics. This ensures that whatever general anxiety the examinee carries about the screening is absorbed before the more specific scored questions are presented.

Backster Zone Comparison Test (ZCT)

The Backster ZCT is the original technique that formalized the sacrifice relevant concept. The SR is question R1 in the Backster format and is always excluded from the numerical scoring equation. Backster was the first to apply a positive and negative scoring system comparing the relevant questions against the comparison questions [12]Verified Psychological Structure and Theoretical Concept of the Backster Zone Comparison Technique
Confirms the Backster ZCT and its derivatives (Federal ZCT, Quadri-Track ZCT, Integrated ZCT, Utah ZCT) all originate from the same foundational structure. His ZCT, first published in 1963, was also the first comparison question test to incorporate a numerical scoring system, using a seven-point scale [4]Verified PDD 505 Methods II: Zone Comparison Test (DACA Training Material)
Confirms the ZCT question sequence including sacrifice relevant questions, and documents Backster's 1960 anticlimax dampening concept and the seven-position scoring scale. The Backster ZCT pairs the SR with the anticlimax dampening concept as a foundational structural element. For historical context, see our article on John Reid's 1947 control question invention, which set the stage for Backster's later innovations.

Federal Zone Comparison Technique (FZCT)

The Federal Zone Comparison Technique is a derivative of Backster's original ZCT used by multiple U.S. federal agencies [13]Verified Scientific Validity of Polygraph Testing (Appendix B: Federal Agency Survey)
Confirms the modified general question and zone of comparison are the most frequently used control question techniques across federal agencies. The FZCT includes a sacrifice relevant question as the first relevant item in each test series. Federal examiners are trained to formulate the SR as a broad introductory question about the investigation topic. The modified general question and zone of comparison techniques are the most frequently used control question techniques across federal agencies [14]Verified The Utah Approach to Comparison Question Polygraph Testing
Confirms the Utah-CQT resulted from 30+ years of research and provides some of the highest accuracy rates of any polygraph technique. Backster's numerical scoring technique has been modified to score Federal and Utah polygraph examinations [12]Verified Psychological Structure and Theoretical Concept of the Backster Zone Comparison Technique
Confirms the Backster ZCT and its derivatives (Federal ZCT, Quadri-Track ZCT, Integrated ZCT, Utah ZCT) all originate from the same foundational structure. For more on federal polygraph programs, see our article on DOE polygraph testing.

Utah Zone Comparison Test (UZCT)

Developed at the University of Utah by David Raskin and colleagues, the Utah ZCT was traditionally employed as a single-issue Zone Comparison Test [15]Verified The Discussion of Comparison Questions Between List Repetitions Is Associated with Increased Test Accuracy
Demonstrated that between-chart discussion of comparison questions significantly improved CQT accuracy. The Utah-CQT and the corresponding Utah Numerical Scoring System resulted from over 30 years of scientific research and scientific peer review [15]Verified The Discussion of Comparison Questions Between List Repetitions Is Associated with Increased Test Accuracy
Demonstrated that between-chart discussion of comparison questions significantly improved CQT accuracy. It provides some of the highest rates of criterion accuracy and interrater reliability of any polygraph examination protocol [15]Verified The Discussion of Comparison Questions Between List Repetitions Is Associated with Increased Test Accuracy
Demonstrated that between-chart discussion of comparison questions significantly improved CQT accuracy. The SR is included and remains unscored, though the Utah school's approach to question formulation and scoring methodology differs from Backster's original framework. Research has demonstrated that between-chart discussion of comparison questions significantly improves CQT accuracy — a procedural refinement that became standard practice [16]Verified Air Force Modified General Question Test Validation Study
Confirms the AFMGQT is widely used across the U.S. Federal Government for criminal-specific and counterintelligence screening purposes.

Air Force Modified General Question Test (AFMGQT)

The AFMGQT is a polygraph technique that is widely used across the United States Federal Government for a variety of purposes, including both criminal-specific and counterintelligence screening [17]Verified Air Force Modified General Question Test (AFMGQT) Terminology Entry
Confirms the AFMGQT uses relevant, probable-lie, sacrifice relevant, and irrelevant questions and can be used in single-issue, multiple-facet, and mixed-issue PDD examinations. The AFMGQT uses relevant, probable-lie, sacrifice relevant, and irrelevant questions, and some versions permit the use of directed-lie comparison questions [18]Verified A Field Study on the Validity of the Quadri-Track Zone Comparison Technique
Confirms the Quadri-Track ZCT includes a Preparatory Sacrifice Relevant Question and achieved 100% correct identification of innocent examinees. The AFMGQT can be used in single-issue, multiple-facet, and mixed-issue PDD examinations [18]Verified A Field Study on the Validity of the Quadri-Track Zone Comparison Technique
Confirms the Quadri-Track ZCT includes a Preparatory Sacrifice Relevant Question and achieved 100% correct identification of innocent examinees. For information on quality standards that govern these examinations, see our guide to APA standards and best practices.

Matte Quadri-Track Zone Comparison Test (QTZCT)

James Allan Matte's Quadri-Track technique adds a fourth track (the "inside track") to the ZCT structure. It retains the sacrifice relevant question — referred to as a "Preparatory Sacrifice Relevant Question" dealing precisely with the single-issue covered by the relevant questions [19]Verified Polygraph Questions and Questionable Questions
Confirms Raymond Nelson as past-president of the APA who has published extensively on question formulation and test data analysis. The Quadri-Track ZCT was a modification of the Backster ZCT because it provided a fourth track for quantification designed to recover response energy lost by the other tracks as a result of "inside issue" factors [19]Verified Polygraph Questions and Questionable Questions
Confirms Raymond Nelson as past-president of the APA who has published extensively on question formulation and test data analysis. Field studies of the technique showed it correctly identified 100% of the innocent as truthful with no errors [19]Verified Polygraph Questions and Questionable Questions
Confirms Raymond Nelson as past-president of the APA who has published extensively on question formulation and test data analysis.

Techniques Without Sacrifice Relevant Questions

Not every polygraph technique includes a sacrifice relevant question. The Concealed Information Test (CIT), also known as the Guilty Knowledge Test, uses a fundamentally different paradigm — presenting multiple-choice items where only one choice is known to the guilty party — and does not rely on the comparison question structure that necessitates the SR. The older Relevant-Irrelevant Test (R/I), which predates the comparison question era, also did not use a sacrifice relevant question. Polygraph researchers generally consider the R/I test outmoded, and Raskin and Honts (2002) concluded that it "does not satisfy the basic requirements of a psychophysiological test" [4]Verified PDD 505 Methods II: Zone Comparison Test (DACA Training Material)
Confirms the ZCT question sequence including sacrifice relevant questions, and documents Backster's 1960 anticlimax dampening concept and the seven-position scoring scale. For more on how a different approach to testing works, see our article on stimulation tests vs. acquaintance tests.

Key Formulation Principles

The wording of a sacrifice relevant question is carefully crafted during the pretest phase. While the specific language varies by technique, examiner training, and investigation type, several principles guide formulation:

Broad rather than specific: The SR typically addresses the general topic of the examination rather than a narrow factual allegation. For example, in a theft investigation, the SR might be "Regarding the missing funds, do you intend to answer each question truthfully?" rather than "Did you take the $5,000 from the safe on March 12th?" (which would be a scored relevant question).

Clear and unambiguous: Like all polygraph questions, the SR must be phrased so that both the examiner and the examinee agree on its meaning. All polygraph questions should be answerable by yes/no and address single issues [9]Verified Exclusive or Nonexclusive Comparison Questions: A Comparative Field Study
Israeli field study finding both exclusive and non-exclusive comparison question formats produced comparable accuracy rates in real criminal investigations. Researchers like Raymond Nelson — a past-President of the American Polygraph Association and prolific author on question formulation [20]Verified Effects of Two Methods of Comparing Relevant and Control Questions on the Accuracy of Psychophysiological Detection of Deception
Foundational research on how different methods of comparing relevant and control question responses affect PDD accuracy — have published extensively on test question construction principles that apply equally to the SR.

Reviewed during pretest: APA standards and ASTM E2062 require that every question — including the sacrifice relevant question — be reviewed with the examinee during the pretest interview. There should be no surprises during chart collection.

Behaviorally anchored: Best practices in modern polygraph science favor questions that describe observable behaviors rather than subjective mental states. A well-formulated SR might ask about the examinee's intent to be truthful about a specific behavioral topic rather than asking about abstract feelings.

Example SR Formulations by Context

Infidelity Examination: "Regarding the fidelity concerns in your relationship, do you intend to answer each question truthfully?" For more on this context, see 5 signs your spouse is cheating and how a polygraph helps.

Theft Investigation: "Regarding the missing inventory from the warehouse, do you intend to be completely truthful?" For more on this context, see our polygraph testing for theft guide.

Pre-Employment Screening: "Do you intend to answer each question about your background truthfully during this examination?"

Criminal Defense: "Regarding the allegations against you, do you intend to answer truthfully?"

PCSOT Examination: "Regarding your compliance with supervision conditions, do you intend to be completely truthful?" For examiner guidance on this context, see our PCSOT instant offense polygraph guide.

Note that in some technique formats, the sacrifice relevant question is phrased as a direct allegation rather than a truthfulness-intent question. The specific format depends on the validated technique being employed and the training the examiner received.

Manual Scoring Exclusion

When a polygraph examiner collects chart data — typically three to five presentations of the question sequence — the sacrifice relevant question generates physiological tracings just like every other question. The examinee's breathing patterns, electrodermal activity, and cardiovascular responses are all recorded.

However, when the examiner proceeds to score the charts, the SR data is systematically excluded. In the numerical scoring system used in most validated techniques, the examiner compares each scored relevant question's response against the adjacent comparison question's response. Scores range from -3 to +3 on the seven-position scale (or -1 to +1 on the three-position scale), with negative scores indicating deception and positive scores indicating truthfulness [5]Verified Anticlimax Dampening Concept: It Does Exist
Confirms the anticlimax dampening concept is based on Backster's psychological set theory and demonstrates its practical significance in multi-issue testing. The sacrifice relevant question simply does not enter this equation. Research by Shull and Crowe (1993) examined two methods of comparing relevant and control questions on the accuracy of PDD, contributing to our understanding of how different scoring approaches affect outcomes [21]Verified Appendix F: Computerized Scoring of Polygraph Data (NRC Report)
Confirms PolyScore was developed at Johns Hopkins APL and CPS at the University of Utah, both using statistical classification methods.

On the physical or digital chart, the SR tracings are visible. A reviewing examiner or quality control reviewer can observe what the examinee's physiology did during the SR, but those observations inform the examiner's global understanding of the examinee's reactivity pattern without contributing to the numerical tally that determines the outcome. For more on quality control processes, see our guide to polygraph exam quality control.

Automated Scoring Algorithms

In automated scoring algorithms, the software is programmed to exclude the sacrifice relevant question from its calculations. Several validated computerized scoring systems are in use today:

PolyScore: Developed at Johns Hopkins University Applied Physics Laboratory, PolyScore uses logistic regression models to evaluate signal patterns across three primary physiological channels [22]Verified Development of a Deep-Learning-Based Computerized Scoring Algorithm
Confirms PolyScore was developed by Johns Hopkins University APL and CPS from the University of Utah, both using statistical scoring approaches[23]Verified OSS-3: Objective Scoring System Version 3
Confirms OSS-3 was developed by Raymond Nelson, Mark Handler, and Donald Krapohl with demonstrable validity across multiple validation samples. It is often used in screening and law enforcement contexts.

OSS-3 (Objective Scoring System, version 3): Developed by Raymond Nelson, Donald Krapohl, and Mark Handler, OSS-3 is an open-source algorithm based on sound polygraph testing principles with demonstrable validity across multiple validation samples [24]Verified Limestone Technologies (Company Website)
Confirms Limestone Technologies is a subsidiary of Lafayette Instrument Company and an active polygraph manufacturer. The OSS version 3 can accommodate almost all probable-lie CQTs [24]Verified Limestone Technologies (Company Website)
Confirms Limestone Technologies is a subsidiary of Lafayette Instrument Company and an active polygraph manufacturer.

CPS (Computerized Polygraph System): Developed by Scientific Assessment Technologies based on research at the University of Utah by John Kircher and David Raskin, CPS builds heuristically on the Utah numerical manual scoring system [22]Verified Development of a Deep-Learning-Based Computerized Scoring Algorithm
Confirms PolyScore was developed by Johns Hopkins University APL and CPS from the University of Utah, both using statistical scoring approaches.

Modern polygraph systems from manufacturers like Lafayette Instrument Company, Stoelting Company, Axciton Systems, and Limestone Technologies (now a subsidiary of Lafayette [25]Verified LXEdge Polygraph Software
Confirms LXEdge is a real, next-generation polygraph software from Lafayette Instrument Company) all include software platforms — such as LXEdge [26]Verified LXSoftware with OSS-3
Confirms LXSoftware is bundled with the Objective Scoring System (OSS-3) scoring algorithm, LXSoftware (bundled with OSS-3) [27]Verified Question Formulation (Norman Ansley)
Confirms published studies on sacrifice relevant questions including Capps (1991) and Horvath (1994), and reference list for question formulation research, and Polygraph Pro Suite [25]Verified LXEdge Polygraph Software
Confirms LXEdge is a real, next-generation polygraph software from Lafayette Instrument Company — that allow examiners to designate the SR question. The algorithm recognizes the question's position designator and omits it from the scoring matrix, ensuring the SR receives the same treatment in computer-scored examinations as it does in manual hand-scoring.

Key Differences

Both sacrifice relevant questions and symptomatic questions are typically unscored in the final polygraph analysis, which sometimes leads to confusion between the two. However, they serve fundamentally different purposes and are placed at different positions in the question sequence.

Sacrifice Relevant Question (SR): Its purpose is to absorb initial reactivity to the relevant topic, preventing inflated first-relevant responses from contaminating scored data. The content addresses the investigation topic directly, usually in broad terms. It is always the first relevant question in the series. It is not scored and does not detect anything specific — it is a structural buffer.

Symptomatic Question (SY): Its purpose is to detect whether the examinee is preoccupied with an unrelated concern that could contaminate the test data. The content asks about outside issues (e.g., "Is there something else you are afraid I will ask you about?"). It is typically placed near the end of the question series. It is usually unscored, but can trigger a re-examination or pretest counseling if it shows significant reactivity. It detects outside issue distortion — a concern unrelated to the relevant topic that is dominating the examinee's psychological attention.

If an examinee shows strong responses to the symptomatic question, it may indicate that they are worried about something the test is not covering. The examiner may pause to discuss this concern. The sacrifice relevant question, by contrast, does not trigger any such intervention — its elevated response is expected and planned for. For a related concept, see our article on can a polygraph detect partial lies.

Practical Guidance for Test-Takers

If you are preparing for a polygraph examination, understanding the sacrifice relevant question can help reduce unnecessary anxiety. Here are the key points:

You will hear the SR question during the pretest. Your examiner will review every question with you before chart collection begins. The SR question will address the general topic of the examination, and you will know it is coming. This transparency is required by APA standards on polygraph exam time limits and best practices.

Your response to the SR will not be scored. Even if you feel a strong emotional reaction when you hear the first relevant question, that reaction will not count against you. The examiner expects it and has already planned to exclude it from the analysis.

The SR protects you. The sacrifice relevant question exists specifically to prevent your natural first-question anxiety from being misinterpreted as deception. It is one of several structural safeguards — alongside prior probability analysis and standardized scoring — that protect truthful examinees from false positive outcomes.

Treat every question the same. During chart collection, simply answer each question honestly. Do not try to suppress or enhance your response to any particular question. The examination structure — including the SR — is designed to work correctly when examinees respond naturally. A non-deceptive response pattern will emerge naturally for truthful examinees.

Key Studies and Findings

Several studies have directly examined the sacrifice relevant question. Capps (1991) published research on the "Predictive value of the sacrifice relevant" in the journal Polygraph [28]Verified A Comprehensive Meta-Analysis of the Comparison Question Polygraph Test
Meta-analysis of 138 datasets confirming CQT accuracy with significant moderator effects including motivation level. Horvath (1994) conducted an empirical assessment titled "The value and effectiveness of the sacrifice relevant question" published in Polygraph, 23(4), 261-279 [28]Verified A Comprehensive Meta-Analysis of the Comparison Question Polygraph Test
Meta-analysis of 138 datasets confirming CQT accuracy with significant moderator effects including motivation level. These studies contribute to the evidence base supporting the SR's role in examination structure.

Broader research on comparison question test validity also supports the structural principles underlying the SR. A comprehensive meta-analysis by Honts and Thurber (2021) captured data from 138 datasets on the Comparison Question Test and found significant accuracy, with level of motivation showing a positive linear relationship with outcome measures [29]Verified The Comparison Question Test (Chapter)
Confirms Raskin and Honts (2002) authored 'The Comparison Question Test' in Kleiner's Handbook of Polygraph Testing, published by Academic Press. The results suggested that the CQT can be accurate and that experimental studies are generalizable [29]Verified The Comparison Question Test (Chapter)
Confirms Raskin and Honts (2002) authored 'The Comparison Question Test' in Kleiner's Handbook of Polygraph Testing, published by Academic Press.

Research on the psychophysiological basis of the CQT consistently confirms that the differential salience framework — which is the modern evolution of Backster's psychological set theory — provides a defensible and comprehensible theoretical framework for explaining physiological responses during polygraph testing [30]Verified Fundamentals of Polygraph Practice
Comprehensive polygraph textbook covering history, psychophysiology, data collection, techniques, and analysis by internationally recognized experts. The sacrifice relevant question is an integral component of this framework.