Lying involves the whole spectrum of human social interactions, from intimate relationships to job interviews and workplace relationships to forensic settings. One of the first studies about the role of lies in everyday life found that people tell on average one or two lies each day. Lying is a significant part of our daily social life. Our findings highlight the importance of considering race in the study of truthful and deceptive communications. However, the predicted interaction between race of partners and truth status of message (lying vs. Results provided support for the first two hypotheses. Pupil dilation was assessed with a remote eye-tracking system.
Indeed, we used feminine and masculine synthetic voices. Black partners (one male and one female) would ask the questions via computer connection. Participants were instructed to answer a set of questions, half truthfully and half deceptively. Finally, we hypothesized that pupil dilation would be greater when lying to White than Black partners. Furthermore, pupil dilation was expected to be greater when responding to White than Black partners. In accordance with these results, we predicted greater pupil dilation when lying than when telling the truth.
In line with this assumption, previous studies have shown that lying is associated with greater pupil dilation, a behavioral cue that typically manifests itself under conditions of stress or cognitive effort. Research on cues to deception has assumed that lying is more cognitively demanding that truth telling. In the present study, we examined the pupillary response of White participants who were asked to tell the truth or lie to White or Black partners.
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