Journal of Nonverbal Behavior最新文献

Researchers have often claimed that the interviewer’s nonverbal behavior such as nodding facilitates rapport building, the number of recalled details, and verbal veracity cues. However, there is no experiment to-date that isolated the effects of nodding in information gathering interviews. We thus examined the effects of interviewer’s nodding behavior on rapport perceptions and on the number and accuracy of total details provided by truth tellers and lie tellers. Participants (N = 150) watched a video recording and then reported it truthfully or falsely to an interviewer. The interviewer showed demeanor that was either supportive with nodding, supportive without nodding, or neutral. Truth tellers reported more total details than lie tellers and these effects were similar across demeanor conditions. No significant effects emerged for rapport perceptions and accuracy of total details. These results suggest that the interviewer’s nodding behavior does not affect rapport perceptions and details provided by truth tellers and lie tellers.

Abstract

A significant body of research has investigated potential correlates of deception and bodily behavior. The vast majority of these studies consider discrete, subjectively coded bodily movements such as specific hand or head gestures. Such studies fail to consider quantitative aspects of body movement such as the precise movement direction, magnitude and timing. In this paper, we employ an innovative data mining approach to systematically study bodily correlates of deception. We re-analyze motion capture data from a previously published deception study, and experiment with different data coding options. We report how deception detection rates are affected by variables such as body part, the coding of the pose and movement, the length of the observation, and the amount of measurement noise. Our results demonstrate the feasibility of a data mining approach, with detection rates above 65%, significantly outperforming human judgement (52.80%). Owing to the systematic analysis, our analyses allow for an understanding of the importance of various coding factor. Moreover, we can reconcile seemingly discrepant findings in previous research. Our approach highlights the merits of data-driven research to support the validation and development of deception theory.

Dynamic face stimuli are increasingly used in face perception research, as increasing evidence shows they are perceived differently from static photographs. One popular method for creating dynamic faces is the dynamic morph, which can animate the transition between expressions by blending two photographs together. Although morphs offer increased experimental control, their unnatural motion differs from the biological facial motion captured in video recordings. This study aimed to compare ratings of emotion intensity and genuineness in video recordings, dynamic morphs, and static photographs of happy, sad, fearful, and angry expressions. We found that video recordings were perceived to have greater emotional intensity than dynamic morphs, and video recordings of happy expressions were perceived as more genuine compared to happy dynamic morphs. Unexpectedly, static photographs and video recordings had similar ratings for genuineness and intensity. Overall, these results suggest that dynamic morphs may be an inappropriate substitute for video recordings, as they may elicit misleading dynamic effects.

Sexual objectification mostly targets women and occurs whenever they are treated as bodies for the use or consumption of others and stripped of their full humanity. While research has mostly focused on sexual harassment and aggression as the main behavioral consequence of sexual objectification, only a few studies have tried to focus on more subtle consequences towards sexually objectified targets. Spontaneous mimicry is an implicit behavior that influences our social interactions in general. It involves the imitation of other people’s postures, gestures and emotions and allows one to understand other’s emotions and intentions. Therefore, impairments in mimicry behavior are bound to have potentially damaging consequences in everyday social interactions for women who fall victim of sexual objectification. In two studies, using electromyography we measured participants’ mimicry behavior towards objectified and non-objectified women who expressed happiness and anger. Results indicated that both male and female participants attributed less mental and human traits and showed less mimicry behavior towards sexually objectified rather than non-objectified women especially when they expressed happiness. Given the fundamental role of mimicry in creating successful everyday interpersonal interactions, the results of this research advance our understanding on the more subtle, but daily consequences of sexual objectification.

Abstract

Meta-analyses have not shown emotions to be significant predictors of deception. Criticisms of this conclusion argued that individuals must be engaged with each other in higher stake situations for such emotions to manifest, and that these emotions must be evaluated in their verbal context (Frank and Svetieva in J Appl Res Memory Cognit 1:131–133, 10.1016/j.jarmac.2012.04.006, 2012). This study examined behavioral synchrony as a marker of engagement in higher stakes truthful and deceptive interactions, and then compared the differences in facial expressions of fear, contempt, disgust, anger, and sadness not consistent with the verbal content. Forty-eight pairs of participants were randomly assigned to interviewer and interviewee, and the interviewee was assigned to steal either a watch or a ring and to lie about the item they stole, and tell the truth about the other, under conditions of higher stakes of up to $30 rewards for successful deception, and $0 plus having to write a 15-min essay for unsuccessful deception. The interviews were coded for expression of emotions using EMFACS (Friesen and Ekman in EMFACS-7; emotional facial action coding system, 1984). Synchrony was demonstrated by the pairs of participants expressing overlapping instances of happiness (AU6 + 12). A 3 (low, moderate, high synchrony) × 2 (truth, lie) mixed-design ANOVA found that negative facial expressions of emotion were a significant predictor of deception, but only when they were not consistent with the verbal content, in the moderate and high synchrony conditions. This finding is consistent with data and theorizing that shows that with higher stakes, or with higher engagement, emotions can be a predictor of deception.

We examined whether mimicking an interaction partner is universally advantageous or, provided the mimicry is particularly strong, whether it has detrimental impacts on interpersonal and negotiation outcomes. Participants interacted with a confederate who engaged in no, subtle, or strong mimicry and then negotiated. In laboratory Experiment 1 (N = 71) and Experiment 2 (N = 149), subtly (vs. not) mimicked participants liked the confederate more, while strongly (vs. subtly) mimicked participants liked and trusted less. In Experiment 2, strongly (vs. subtly) mimicked participants were less susceptible to the first-offer anchor. The online Experiment 3 (N = 180) corroborated the too-much-mimicry effect: When participants became aware of mimicry, it exerted detrimental effects on liking and trust irrespective of the experimental condition. Experiment 1 and Experiment 3 found no too-much-mimicry effect on anchoring susceptibility. These findings show that (a) sufficiently subtle mimicry positively influences interpersonal outcomes and (b) too much mimicry backfires.