You Can't Run, But You Can Hide: A Critical Look at the Fight or Flight Response in Psychophysiological Detection of Deception

Handler and Honts critically examined the fight-or-flight response as the dominant theoretical explanation for polygraph functioning, arguing for a more sophisticated understanding of the underlying mechanisms. The paper challenged the oversimplified reliance on Cannon's 1929 fear-based model and advocated for recognizing multiple psychological processes that contribute to polygraph reactions.

This theoretical review paper systematically analyzed psychological and physiological literature to challenge existing polygraph theory, examining historical theoretical frameworks and evidence from psychophysiological research.

This critical review challenged the long-standing reliance on Walter Cannon's 1929 fight-or-flight theory as the primary explanation for polygraph responses. Handler and Honts conducted a systematic examination of psychological literature to demonstrate that fear-based mechanisms oversimplify the complex processes during deception detection. They found that multiple appraisal levels (subconscious and conscious) trigger varied emotions based on individual experiences, values, and expectations. The paper concluded that emotional arousal, cognitive arousal, and behavioral conditioning all contribute to physiological responses during polygraph testing. This work represented a crucial theoretical advancement pushing the field toward more sophisticated explanatory frameworks.

This theoretical advancement was essential for improving both polygraph test design and the scientific credibility of psychophysiological deception detection by moving beyond monolithic fear-based explanations. The work provided a foundation for developing more nuanced testing approaches that acknowledge multiple psychological mechanisms underlying polygraph responses.

Background & Context

The fight-or-flight response has long been invoked as the primary theoretical explanation for why polygraph testing works. This paper by Mark Handler and Charles R. Honts represents a critical examination of this oversimplified model that dominated polygraph theory for decades.

The field had historically relied on an explanation of "psychological set" related to Walter Cannon's 1929 fight-or-flight response, though this was increasingly regarded as an inadequate model for both polygraph responses and stress responses in general. Handler and Honts challenged this conventional wisdom at a crucial time when the polygraph profession needed more sophisticated theoretical frameworks. Contemporary researchers recognized the need to think of a "continuum of causes, rather than one simple explanation" when considering the underlying cause of arousal during polygraph testing.

The paper's contribution lies in pushing the field beyond monolithic fear-based theories toward recognition that multiple psychological mechanisms—including cognitive arousal, emotional responses beyond fear, and behavioral conditioning—likely contribute to polygraph reactions. This theoretical advancement was essential for improving both test design and the scientific credibility of psychophysiological deception detection.

Research Design & Methodology

This work is a theoretical and critical review paper rather than an empirical study with participants. Handler and Honts conducted a systematic examination of the psychological and physiological literature to challenge the dominant fight-or-flight paradigm in polygraph theory.

The authors analyzed the theoretical underpinnings of polygraph testing by examining:

• The historical reliance on Cannon's fight-or-flight theory as the primary explanatory mechanism
• Evidence from psychophysiological research demonstrating multiple emotional and cognitive pathways to arousal
• The limitations of single-emotion theories in explaining diverse polygraph response patterns
• Alternative theoretical frameworks including cognitive load, differential salience, and conditioning theories

The paper asserted that rather than fear alone, many other emotions may play a role during polygraph testing, and examined the relationship between cognition (appraisal) and emotions. Their approach integrated contemporary emotion theory with polygraph science.

Results & Key Findings

The central finding is that the fight-or-flight response alone cannot adequately explain physiological reactions during polygraph examinations. The paper demonstrated that relying solely on fear-based mechanisms oversimplifies the complex psychological processes at work during deception detection.

Key theoretical conclusions include:

• Most research has identified at least two distinct patterns or levels of appraisal—subconscious and conscious awareness—and both levels of appraisal trigger emotions
• The specific emotion triggered can vary widely among individuals based on their prior experiences, values, goals, and expectations
• There is no doubt that physiological changes accompany emotion, but current PDD technology cannot distinguish specific emotions
• Multiple psychological factors are at play during deception including emotional arousal, cognitive arousal, and behavioral conditioning, and the notion that physiological reactions occur for a reason limited to one theory is "incompatible with the psychophysiological literature"

The paper's title itself—"You Can't Run, But You Can Hide"—cleverly inverts the common phrase to suggest that while examinees cannot escape physiological responses (they "can't run"), the actual psychological mechanisms may be "hiding" behind oversimplified fear theories.

Discussion & Significance

This paper fundamentally reshaped how polygraph professionals conceptualize the psychological basis of their examinations. By dismantling the fight-or-flight monolith, Handler and Honts paved the way for more nuanced theoretical models that better reflect the complexity of human stress responses and deception-related arousal.

The work contributed to a broader theoretical evolution in the field. The concept of "differential salience" emerged to provide a defensible theoretical framework through which a variety of explanations can be integrated, allowing researchers to account for physiological responses that occur for a variety of reasons. This multicausal framework has become increasingly accepted in contemporary polygraph science.

The paper's importance extends beyond theory to practical applications. Understanding that examinees may experience emotions beyond simple fear—including guilt, shame, anger, or cognitive strain—helps examiners better design questions, interpret responses, and understand individual differences in reactivity. It also strengthened the scientific foundation of polygraph testing by aligning it with modern emotion and psychophysiology research rather than outdated 1920s stress theory.

Limitations & Considerations

As a theoretical review rather than an empirical study, this paper does not provide new experimental data or statistical findings. Its conclusions rest on analysis and synthesis of existing literature rather than novel behavioral or physiological observations. The paper critiques an inadequate theory but does not fully resolve which specific mechanisms best explain polygraph responses.

The field still faces the challenge of defining which single emotion or the exact focus of attention and cognition within the examinee is operative, as evidence has not yet verified a more detailed description. While Handler and Honts successfully argued against oversimplification, the polygraph community continues to grapple with identifying the precise psychological mechanisms that drive differential physiological responding.

Practical Applications

This theoretical advancement has direct implications for polygraph examiners and test design. Rather than assuming all examinees experience simple fear of detection, examiners should recognize that truthful and deceptive individuals may experience a complex array of emotional and cognitive states. This understanding can improve pretest interviews, question formulation, and interpretation of ambiguous response patterns.

For consumers and professionals evaluating polygraph evidence, the paper underscores that polygraph testing has a more sophisticated scientific foundation than simple fear detection. Modern polygraph theory recognizes cognitive load, personal salience of questions, conditioned emotional responses, and multiple appraisal pathways. This theoretical maturity strengthens the credibility of properly conducted examinations while also highlighting why examiner expertise and standardized procedures remain critical—the psychological mechanisms are complex and multifaceted, not reducible to a simple autonomic reflex.