Machiavellianism and sexual behavior: Motivations,deception and infidelity

The current study investigated the influence of Machiavellianism, a personality trait characterized by a manipulative interpersonal style and willingness to exploit others (Christie & Geis, 1970), on three areas of sexual behavior. Men (N = 90) and women (N = 192) aged 18–81 years (M = 25.82, SD = 9.85) completed the Mach IV (Christie & Geis, 1970), YSEX Questionnaire (Meston & Buss, 2007), Sexual Deception Scale (Marelich, Lundquist, Painter, & Mechanic, 2008) and Intentions Towards Infidelity Scale (Jones, Olderbak, & Figueredo, 2011). Those with high levels of Machiavellianism were more likely to engage in sexual behavior for physical reasons, goal attainment and insecurity. In particular, Machiavellian men and women endorsed stress reduction, experience seeking, resources, social status, revenge, utilitarian reasons, boosting self-esteem, duty/pressure, and mate guarding as motivations for sexual behavior. Machiavellianism was also a significant predictor of each form of sexual deception investigated (blatant lying, self-serving and avoiding confrontation) and intentions to engage in infidelity. Sex did not moderate the influence of Machiavellianism on sexual behavior.     

The inhibitory spillover effect: Controlling the bladder makes better liars

The Inhibitory-Spillover-Effect (ISE) on a deception task was investigated. The ISE occurs when performance in one self-control task facilitates performance in another (simultaneously conducted) self-control task. Deceiving requires increased access to inhibitory control. We hypothesized that inducing liars to control urination urgency (physical inhibition) would facilitate control during deceptive interviews (cognitive inhibition). Participants drank small (low-control) or large (high-control) amounts of water. Next, they lied or told the truth to an interviewer. Third-party observers assessed the presence of behavioral cues and made true/lie judgments. In the high-control, but not the low-control condition, liars displayed significantly fewer behavioral cues to deception, more behavioral cues signaling truth, and provided longer and more complex accounts than truth-tellers. Accuracy detecting liars in the high-control condition was significantly impaired; observers revealed bias toward perceiving liars as truth-tellers. The ISE can operate in complex behaviors. Acts of deception can be facilitated by covert manipulations of self-control.     

Suppressing the truth as a mechanism of deception: Delta plots reveal the role of response inhibition in lying

Lying takes more time than telling the truth. Because lying involves withholding the truth, this “lie effect” has been related to response inhibition. We investigated the response inhibition hypothesis of lying using the delta-plot method: A leveling-off of the standard increase of the lie effect with slower reaction times would be indicative of successful response inhibition. Participants performed a reaction-time task that required them to alternate between lying and truth telling in response to autobiographical questions. In two experiments, we found that the delta plot of the lie effect leveled off with longer response latencies, but only in a group of participants who had better inhibitory skills as indexed by relatively small lie effects. This finding supports the role of response inhibition in lying. We elaborate on repercussions for cognitive models of deception and the data analysis of reaction-time based lie tests.     

Simulated thought insertion: Influencing the sense of agency using deception and magic

In order to study the feeling of control over decisions, we told 60 participants that a neuroimaging machine could read and influence their thoughts. While inside a mock brain scanner, participants chose arbitrary numbers in two similar tasks. In the Mind-Reading Task, the scanner appeared to guess the participants’ numbers; in the Mind-Influencing Task, it appeared to influence their choice of numbers. We predicted that participants would feel less voluntary control over their decisions when they believed that the scanner was influencing their choices. As predicted, participants felt less control and made slower decisions in the Mind-Influencing Task compared to the Mind-Reading Task. A second study replicated these findings. Participants’ experience of the ostensible influence varied, with some reporting an unknown source directing them towards specific numbers. This simulated thought insertion paradigm can therefore influence feelings of voluntary control and may help model symptoms of mental disorders.     

The role of motivation to avoid detection in reaction time-based concealed information detection

Do motivated liars lie more successfully? The motivational effort hypothesis predicts that higher motivation effectively diminishes the chance of being detected, whereas the motivational impairment hypothesis predicts that the higher the motivation to go undetected, the greater the chance of being detected. We manipulated motivation in two online reaction time-based Concealed Information Test studies in which participants tried to hide their identity. Detection of concealed identity information in Experiment 1 (n = 259) was successful and a small financial incentive to avoid detection did not impact upon validity. Despite a greater financial incentive and a manipulation check showing that motivation was increased, Experiment 2 (n = 233) did not impact upon the test's validity either. A financial incentive to avoid detection did not decrease the validity of concealed information detection.     

Instrumental lying by parents in the US and China

The practice of lying to one's children to encourage behavioral compliance was investigated among parents in the US (N = 114) and China (N = 85). The vast majority of parents (84% in the US and 98% in China) reported having lied to their children for this purpose. Within each country, the practice most frequently took the form of falsely threatening to leave a child alone in public if he or she refused to follow the parent. Crosscultural differences were seen: A larger proportion of the parents in China reported that they employed instrumental lie‐telling to promote behavioral compliance, and a larger proportion approved of this practice, as compared to the parents in the US. This difference was not seen on measures relating to the practice of lying to promote positive feelings, or on measures relating to statements about fantasy characters such as the tooth fairy. Findings are discussed with reference to sociocultural values and certain parenting‐related challenges that extend across cultures.     

Children with autism spectrum disorder are more trusting than typically developing children

The current study examined whether children with autism spectrum disorder (ASD) had an indiscriminate trust bias whereby they would believe any information provided by an unfamiliar adult with whom they had no interactive history. Young school-aged children with ASD and their age- and ability-matched typically developing (TD) peers participated in a simple hide-and-seek game. In the game, an experimenter with whom the children had no previous interactive history pointed to or left a marker on a box to indicate the whereabouts of a hidden reward. Results showed that although young school-aged ASD children did not blindly trust any information provided by the unfamiliar adult, they appeared to be more trusting in the adult informant than did their age- and ability-matched TD children.     

When deception influences memory: the implication of theory of mind

When deceiving, one should remember to whom a falsified story was previously told; otherwise he or she may include inconsistencies, and the deception will probably be discovered. Bearing this in mind, we investigated the potential relationship between deception and the ability to remember to whom a piece of information was previously told (i.e., destination memory). Forty-one adults were given a destination memory task in which they had to decide to whom proverbs had previously been told. They were also given a questionnaire about deception (e.g., “I sometimes tell lies if I have to) and a cognitive theory of mind task in which they had to predict the behaviour of protagonists who hold a mistaken belief about the state of the world. Results showed a positive correlation between deception and destination memory (p <?.001), a relationship that was further mediated by cognitive theory of mind ability (p?<?.01). Deception requires monitoring and inferring what targets know, suspect, and believe. This monitoring ability (i.e., cognitive theory of mind) results in better processing of the target and consequently better destination memory. By showing the involvement of deception and theory of mind in destination memory, our findings emphasize the memory variations in social and interpersonal interactions.     

Reply to Doody

In an earlier paper, we appealed to various empirical studies to make the case that the unconscious mind is capable of robust self-deception. Paul Doody has challenged our interpretations of that empirical evidence. In this reply we defend our interpretations, arguing that the unconscious is engaged in strategic and flexible goal pursuit.     

Honesty pays: On the benefits of having and disclosing information in coalition bargaining

People typically think of negotiations as competitive, which often leads them to engage in secrecy and even deception. In three experiments we show that this approach can backfire in coalition bargaining. Results show that, even though bargainers with an outcome advantage only obtain favorable outcomes when this information is public, they rarely choose to reveal this information. Fairness motivations fueled decisions to reveal this information and make attractive offers whereas self-interest fueled decisions not to reveal and make unattractive offers. Finally, perspective taking increased proselfs' inclinations to keep their advantage private whereas it increased prosocials' inclinations to reveal. These findings suggest that many people are not naturally inclined to reveal private information when they have an outcome advantage, but that fairness motives encourage revelation and, ironically, increase revealers' outcomes in coalition bargaining. Thus, in this context, honesty pays.