Cold‐blooded lie catchers? An investigation of psychopathy,emotional processing,and deception detection

Purpose. The process of catching liars is challenging, though evidence suggests that deception detection abilities are influenced by the characteristics of the judge. This study examined individual differences in emotional processing and levels of psychopathic traits on the ability to judge the veracity of written narratives varying in emotional valence. Methods. Undergraduate participants (N= 251) judged the veracity of 12 written narratives (truthful/deceptive) across three emotional categories: positive, negative, and neutral events. Levels of psychopathy were assessed to investigate its relation to accuracy and cue use. Results. Overall accuracy was close to chance, although participants were more accurate in determining the veracity of truthful relative to deceptive narratives. Accuracy was impaired for emotional (positive and negative) relative to neutral narratives. Psychopathy was not associated with levels of overall accuracy, but related to discriminative ability, and differential use of cues in decision making. Reported cue use also differed across emotional narrative conditions. Conclusions. We speculated that an emotive truth bias may have detracted judges from attending to valid cues that are indicative of the deceptive nature of stimuli because they were distracted by the emotional content of the report. Implications for deception detection in forensic settings are discussed.     

Sidetracked by emotion: Observers’ ability to discriminate genuine and fabricated sexual assault allegations

Purpose. Assessing the credibility of reports of sexual victimization – often in the absence of corroboration – presents a significant challenge for legal decision makers. This study examined the accuracy of observers in discriminating genuine and fabricated sexual assault allegations. Further, we examined whether individual differences and cue utilization strategies influenced deception detection accuracy. Methods. Observers (N= 119) evaluated eight (four truthful and four deceptive) written allegations of sexual assault (counterbalanced), and completed a Credibility Assessment Questionnaire (CAQ) and individual differences measures. Results. Results indicated that overall accuracy was below chance (M= 45.3%), and a truth bias was evidenced. Examining the Big Five personality traits, we found that openness to experience and neuroticism were positively associated with accuracy, whereas extraversion was negatively related to accuracy. Further, judgement confidence was negatively associated with accuracy. Conclusions. The present study offers insights into observers’ perceptions of credibility regarding real‐life sexual assault allegations. Implications for legal decision making are discussed.     

Lie Detection Accuracy—the Role of Age and the Use of Emotions as a Reliable Cue

Literature surrounding the accuracy of deception detection has produced inconsistent findings, and the majority of investigations have been based upon low-stakes lies. Although recent research has suggested that high-stakes situations may produce reliable cues to deception, it remains unclear whether knowledge of these cues actually improves the detection of lies. In an online experiment, we assessed participant’s ability to detect lies in 22 public appeals for help with missing or murdered relatives (N = 196). Participants were randomly allocated to either the cue condition (presented with previously identified cues to deception) or no cue condition (instructed to make judgement on instinct), before being presented with the video footage. Participants were asked to indicate whether the appealer is lying or telling the truth, how confident they are in their judgement and if they were familiar with the case. At the end of the experiment, participants wrote qualitative responses on the cues that they used during lie detection. Although cue knowledge and confidence did not significantly predict accuracy scores, there was a positive relationship between accuracy and age. Participants who used emotion-based cues were significantly better at detecting deception. The findings are discussed with reference to the existence of reliable cues.     

Exploring liars’ strategies for creating deceptive reports

Purpose. Most past research on detecting deception has relied on the assumption that liars often fabricate a story to account for their whereabouts, whereas truth tellers simply recall an autobiographical memory. However, little research has examined whether liars, when free to choose the topic of their own reports, will actually choose to fabricate information rather than use a different strategy for constructing their lies. We describe two studies that evaluated liars’ strategies for selecting the content of their lies when given the freedom to choose whatever content they desired. Method. In Studies 1 (N= 35) and 2 (N= 22) participants (a) described a truthful story in order to identify a salient event, then (b) lied about the event, and finally (c) described their strategies for choosing the content of the reported lies. Results. Liars overwhelmingly chose to report a previously experienced event for the time period they were to be deceptive about (67% and 86% in Studies 1 and 2, respectively). The majority of discrete details reported were experienced, occurred relatively frequently, occurred relatively recently, and were typical or routine. Conclusions. These findings have significant implications for the development of cognitive‐based interventions for detecting deception. In particular, some methods of deception that rely on content analysis may be ineffective if liars choose to report previous experiences rather than outright fabrications.     

Seeing is believing: observer perceptions of trait trustworthiness predict perceptions of honesty in high-stakes emotional appeals

Instantaneous first impressions of facial trustworthiness influence the manner in which observers evaluate ensuing information about stranger targets [e.g. Porter, S., &; ten Brinke, L. (2009). Dangerous decisions: A theoretical framework for understanding how judges assess credibility in the courtroom. Legal and Criminological Psychology, 14, 119–134. doi:10.1348/135532508X281520]. In two studies, we examined the association between perceptions of general trustworthiness and honesty assessments in an extremely high-stakes sample – individuals publicly pleading for the return of a missing relative, half of whom had killed the missing individual. In Study 1, observers (N?=?131) provided trustworthiness ratings – either before or after viewing and evaluating the honesty of videotaped or audio-only pleas – for a still image that depicted a neutral expression on the face of each pleader. In Study 2, observers (N?=?220) evaluated the sincerity of audio pleas paired either with an untrustworthy-looking target, a trustworthy-looking target, or no target face. Collectively, our findings indicated that first impressions of trait trustworthiness form the basis of state judgments of honesty, potentially contributing to misguided credibility assessments and miscarriages of justice in the legal system.     

Halfe the world knowes not how the other halfe lies: Investigation of verbal and non‐verbal signs of deception exhibited by criminal offenders and non‐offenders

Purpose. This study examined the verbal and non‐verbal behaviours exhibited by criminal offender and non‐offender participants while they related planned truthful and deceptive accounts about emotional autobiographical events. Methods. In a 2 × 2 (participant group × veracity) quasi‐experimental design, offenders (N = 27) and university students (N = 38) provided videotaped accounts of four autobiographical emotional events: two honest and two fabricated (counterbalanced). Patterns of behaviour exhibited during the truthful and the deceptive accounts were then compared. Results. In general, offenders and non‐offenders showed similar patterns of deceptive behaviour. Deceptive accounts by both groups contained fewer details than honest accounts. Deception was associated with an increase in illustrator usage and self‐manipulations; however, univariate analyses indicated only that offenders exhibited significantly more self‐manipulations when lying. A significant interaction emerged in which offenders showed a reduction in smiles when lying about the emotional events, while students showed no difference. Conclusions. Offenders and students showed similar patterns of lying on most cues. However, unlike non‐offenders, offenders smiled less and showed an increase in self‐manipulations when lying. We theorize that offenders may have been aware that smiling and laughing are negatively related to perceived credibility in the speaker and used self‐manipulations to distract listeners from the content of their lies.     

Preliminary Data on the Role of Emotional Intelligence in Moderating the Link between Psychopathy and Aggression in a Nonforensic Sample

This short report presents preliminary data on the role of emotional intelligence (EI) in moderating the relationship between psychopathy and aggression in a nonforensic sample. A sample of 109 volunteer men was administered the Psychopathic Personality Inventory‐Revised (PPI‐R), the Reactive‐Proactive Aggression Questionnaire, and the Mayer‐Salovey‐Caruso emotional intelligence Test in individual sessions. Correlation and moderation analyzes showed that, at low levels of EI (in terms of strategic ability to understand and manage one's own and others’ emotions), people scoring high on the total PPI‐R and impulsivity dimension seemed to be both reactively and proactively aggressive. By contrast, at high levels of strategic ability, the relationships between psychopathy and aggression were no longer significant. These preliminary results encourage further investigation into the role of EI ability in mitigating aggressive outcomes in psychopathic subjects.     

Cold-blooded women can detect lies with greater accuracy than other women

Lies are notoriously difficult to detect. But it appears that some people are better at accomplishing this task than others even though the factors contributing to deception detection accuracy are not well understood. This study explored the influence of empathy on the detection of deception as a function of the detectors’ gender while dark personality traits were statistically controlled. Eighty men and 80 women were requested to judge whether individuals viewed in videos were giving their true opinion or not on current debatable issues (50% truthful and 50% deceptive narratives). Judges were divided into four groups according to their gender and their degree of empathy, as assessed using the Questionnaire Measure of Emotional Empathy. It was found that women with lower levels of empathy distinguished false from true opinions better than women with higher empathy, whereas no such difference was found in men. These results suggest that the degree of empathy in women influences their ability to detect deception and supports recent studies showing that emotional skills negatively affect deception detection ability. We suggest that less empathic women are less affected by emotional contagion and thus may be more able to focus on non-emotional cues that might reveal deception.     

Detecting deception in suspects: verbal cues as a function of interview strategy

Research on deception has consistently shown that people are poor at detecting deception, partly due to lack of consistent cues to deception. This research focuses on eliciting verbal cues to deception when questioning suspects who deny crime and how such cues differ due to type of questioning. An experiment examined verbal differences between innocent and guilty mock suspects (N=96) as a function of veracity and interview style (Free recall, Probes, or Free recall plus Probes). Guilty (vs innocent) suspects omitted more crime-relevant information and their statements were more likely to contradict the evidence, showing that statement–evidence inconsistency was a cue to deception. This cue to deception was more pronounced when the interview contained probes. Lie-catchers (N=192) obtained an accuracy rate higher than chance (61.5%) for detecting deceptive denials. Implications for further research on verbal cues to deception are discussed.     

Psychopathy and deception detection using indirect measures

Purpose. The goal of the current study was to examine psychopathy and indirect measures of deception detection. Methods. Undergraduate students (N=444) viewed video clips of adult male offenders telling true and false stories about crimes. For each story, participants rated indirect measures of deception (thinking hard, nervousness, emotional arousal, and attempting to control behaviour) and credibility. Participants also chose the story they believed to be true and rated the confidence in their decision. Offenders were rated on the psychopathy checklist – revised. Results. Consistent with past research, deception detection accuracy was at chance level and unrelated to confidence. Ratings on indirect measures by undergraduates did not distinguish true and false statements in offenders. Psychopathic offenders were less successful at deception than non‐psychopathic offenders. Psychopathic traits were associated with lower perceived credibility during deception and ratings of thinking harder while lying. Conclusions. The results suggest that indirect measures of deception detection may be less useful in offender samples. Further, the findings are consistent with the general inability of psychopathic offenders to demonstrate superior deception skills in empirical studies. Indirect measures of deception uniquely related to psychopathic traits offer new insight into the relationship between psychopathy and deception.     

The Impact of Beliefs Concerning Deception on Perceptions of Nonverbal Behavior: Implications for Neuro-Linguistic Programming-Based Lie Detection

Regularly employed in a forensic context, the Neuro-Linguistic Programming (NLP) model purports that the behavioral distinction between somebody who is remembering information and somebody who is constructing information lies in the direction of their eye movements. This strategy reflects numerous current approaches to lie detection, which presume that nonverbal behavior influences perceptions and judgments about deception. The present study emphasized a reverse order by investigating whether beliefs that an individual is deceptive influence perceptions of the respective individual’s nonverbal behavior as indicated by observed eye movement patterns. Sixty participants were randomly assigned to either a group informed that right eye movements indicate constructed and thus deceptive information or a group informed that left eye movements indicate constructed and thus deceptive information. Each participant viewed six investigative interviews depicting the eye movement patterns of mock suspects labeled as deceptive or truthful. The interviews were structured according to different right/left eye movement ratios. Results revealed that participants reportedly observed the deceptive suspects displaying significantly more eye movements in the direction allegedly indicative of deception than did the truthful suspects. This result occurred despite the fact that the actual eye movement ratios in both deceptive/truthful sets of interviews were identical and the eye movements were predominantly in the opposite direction of that allegedly indicative of deception. The results are discussed in the context of encoding-based cognitive-processing theories. Limitations on the generality of the results are emphasized and the applicability (or lack thereof) of NLP-based lie detection in forensic contexts is discussed.     

The Accuracy of Auditors' and Layered Voice Analysis (LVA) Operators' Judgments of Truth and Deception During Police Questioning*

The purpose of this study was to determine if auditors could identify truthful and deceptive persons in a sample (n = 74) of audio recordings used to assess the effectiveness of layered voice analysis (LVA). The LVA employs an automated algorithm to detect deception, but it was not effective here. There were 31 truthful and 43 deceptive persons in the sample and two LVA operators averaged 48% correct decisions on truth‐tellers and 25% on deceivers. Subsequent to the LVA analysis the recordings were audited by three interviewers, each independently rendering a decision of truthful or deceptive and indicating their confidence. Auditors' judgments averaged 68% correct decisions on truth‐tellers and 71% on deceivers. Auditors' detection rates, generally, exceeded chance and there was significantly (p < 0.05) greater confidence on correct than incorrect judgments of deceivers but not on truth‐tellers. These results suggest that the success reported for LVA analysis may be due to operator's judgment.     

Believed cues to deception: Judgments in self‐generated trivial and serious situations

Purpose . To investigate the beliefs that people hold about the cues to deception in serious and trivial lies. Method . A questionnaire study considered the beliefs which people have about the cues to deception in themselves and other people in both trivial and serious lies. Participants were asked to consider how likely it was that a number of verbal and non‐verbal behaviours would give themselves or someone else away during deception. Half the participants considered cues to deception in themselves and the remainder considered cues in other people. All participants were asked to make a judgment on cues to deception in both trivial and serious situations. Results . It was predicted that making the consequences of the lie both salient and meaningful to participants would make participants less stereotypical in their beliefs. Results partially supported these hypotheses – serious lies were associated with more nervous behaviours than trivial ones and a total of six behaviours were regarded as occurring significantly less often in trivial lies than in truthful situations. Conclusions . While similar results were found for serious self‐generated lies to those found in previous research using vignettes, there was some suggestion that the use of a more individually salient lying situation did reduce the reliance on stereotyped behaviour. The believed decrease in certain behaviours during trivial lies is a promising result, and these results are discussed with reference to the roles that stereotypes and heuristics play in ineffective lie detection.     

‘Wasn't me!’ A field study of the relationship between deceptive motivations and psychopathic traits in young offenders

Purpose. Evaluating truthfulness is an integral part of any forensic assessment. Unfortunately, the motives underlying the use of deceptive strategies by offenders and how these may be mediated by personality are not well established, particularly in adolescent samples. Accordingly, the aim of the present study was to identify different deception‐related motivations in a sample of juvenile offenders, with special emphasis placed on the relationship between these motivations and psychopathic traits. Methods. Archived file and videotaped information for 60 Canadian federal juvenile offenders were reviewed in order to identify real‐life (spontaneous) patterns of deceptive motivations. Results. It was found that there were significant differences between the low, medium, and high groups across psychopathic traits for the motivations of (1) lies to obtain a reward; (2) to heighten self‐presentation; and (3) for duping delight. Conclusions. Not only were juvenile offenders found to lie for a variety of reasons, but also psychopathy was found to mediate the specific motivational patterns leading to offender perpetrated deception. The relevance of these findings to the assessment of truthfulness in offender populations is discussed.     

The Reliability of Lie Detection Performance

We examined whether individuals’ ability to detect deception remained stable over time. In two sessions, held one week apart, university students viewed video clips of individuals and attempted to differentiate between the lie-tellers and truth-tellers. Overall, participants had difficulty detecting all types of deception. When viewing children answering yes–no questions about a transgression (Experiments 1 and 5), participants’ performance was highly reliable. However, rating adults who provided truthful or fabricated accounts did not produce a significant alternate forms correlation (Experiment 2). This lack of reliability was not due to the types of deceivers (i.e., children versus adults) or interviews (i.e., closed-ended questions versus extended accounts) (Experiment 3). Finally, the type of deceptive scenario (naturalistic vs. experimentally-manipulated) could not account for differences in reliability (Experiment 4). Theoretical and legal implications are discussed.     

Automation of a screening polygraph test increases accuracy

Abstract

The present study examined the effects of automating the Relevant–Irrelevant (RI) psychophysiological detection of deception test within a mock-screening paradigm. Eighty participants, recruited from the local community, took part in the study. Experimental design was a 2 (truthful/deceptive) by 2 (human/automation) factorial. Participants in the deceptive conditions attempted deception on two items of an employment application. Examinations conducted with the automated polygraph examination were significantly more accurate than examinations conducted by the human polygraph examiner. Statistical analyses revealed different patterns of physiological responses to deceptive items depending upon the automation condition. Those results have potentially interesting theoretical implications. The results of the present study are clearly supportive of additional efforts to develop a field application of an automated polygraph examination.     

A “weapon focus” effect in children

In this paper we examined beliefs about deception held by legal professionals. Three groups of presumed expert lie-catchers were investigated: police officers ( n =104), prosecutors ( n =158), and judges ( n =251). The experts' beliefs about deception were remarkably inconsistent with the general pattern resulting from studies mapping actual cues to deception. For example, a majority of police officers believed there is a strong relationship between (a) deceptive behaviour and gaze aversion and (b) deceptive behaviour and an increase in body movements. The scientific literature does not support this view. Furthermore, all three professional groups believed that truthful consecutive statements are more consistent than deceptive, and that it is easier to detect deception in interactive than non-interactive contexts. Research on deception shows the opposite. For five of the seven investigated items we found significant between-group differences. Both the genesis and the implications of these differences are discussed. Judging from self-ratings, the presumed experts admitted knowing close to nothing about scientific research on deception.     

The interaction of truthful and deceptive information

ABSTRACT

Research consistently shows that truthful accounts are richer in detail than deceptive accounts. It is unknown, however, how interviewees strategically regulate the information they provide when their accounts contain both truthful and deceptive information. This study examined how truths and lies interact, and whether interviewees’ self-reported strategies reflect such interactions. Participants (n?=?144) provided one statement consisting of two elements. We manipulated the veracity of these elements, with participants allocated to either both truthful, both deceptive, or one truthful and the other deceptive conditions. Results indicated that interviewees calibrate the richness of detail provided in the first element of their statement based on the veracity of the following element. Moreover, our exploratory tests revealed that lies become more detailed when they are flanked by truthful information relative to when they are flanked by other deceptive information. The finding that truthful and deceptive information interacts to influence detail richness provides insight into liars’ strategic manipulation of information when statements contain a mixture of truths and lies. Strategic manipulations of this kind could potentially threaten the reliability of commonly used verbal lie detection tools. This study also offers insight to legal practitioners who rely on baseline deviations to assess credibility.     

A Sequence Analysis of Nonverbal Behaviour and Deception

The ability to correctly interpret nonverbal communication (NVC) is an important ability in everyday interactions, which may use NVC techniques to identify the concealment of information. In the present study, a novel approach was used to understand NVC. Behaviour sequence analysis identified specific sequences of behaviours that indicate psychological distress caused by deception. The study involved the analysis of 55 videos of real criminals and high-power individuals that were filmed fabricating statements, which were later exposed as being untruthful at the time of being filmed. In addition, 53 clips of criminals making truthful statements were also analysed as a contrast group. Results indicated clear differences between honest and deceptive responses, such as furrowing of eyebrows in the deceptive sequences occurring more often than honest statements. In addition, sequences of behaviours were shown in the present data set, which could indicate a new method for analysing NVC and detecting psychological distress caused by deception. The possible implications and applications for police and forensic investigation are also outlined.