Biomedical subjects

Bella M DePaulo

Publications and source records attributed to Bella M DePaulo.

3 recordsLinked to original sources

PubMed2006

Accuracy of deception judgments.

We analyze the accuracy of deception judgments, synthesizing research results from 206 documents and 24,483 judges. In relevant studies, people attempt to discriminate lies from truths in real time with no special aids or training. In these circumstances, people achieve an average of 54% correct lie-truth judgments, correctly classifying 47% of lies as deceptive and 61% of truths as nondeceptive. Relative to cross-judge differences in accuracy, mean lie-truth discrimination abilities are nontrivial, with a mean accuracy d of roughly .40. This produces an effect that is at roughly the 60th percentile in size, relative to others that have been meta-analyzed by social psychologists. Alternative indexes of lie-truth discrimination accuracy correlate highly with percentage correct, and rates of lie detection vary little from study to study. Our meta-analyses reveal that people are more accurate in judging audible than visible lies, that people appear deceptive when motivated to be believed, and that individuals regard their interaction partners as honest. We propose that people judge others' deceptions more harshly than their own and that this double standard in evaluating deceit can explain much of the accumulated literature.

Deception↗

PubMed2003

Cues to deception.

Do people behave differently when they are lying compared with when they are telling the truth? The combined results of 1,338 estimates of 158 cues to deception are reported. Results show that in some ways, liars are less forthcoming than truth tellers, and they tell less compelling tales. They also make a more negative impression and are more tense. Their stories include fewer ordinary imperfections and unusual contents. However, many behaviors showed no discernible links, or only weak links, to deceit. Cues to deception were more pronounced when people were motivated to succeed, especially when the motivations were identity relevant rather than monetary or material. Cues to deception were also stronger when lies were about transgressions.

Adult↗

PubMed1992

Nonverbal behavior and self-presentation.

Because of special characteristics of nonverbal behaviors (e.g., they can be difficult to suppress, they are more accessible to the people who observe them than to the people who produce them), the intention to produce a particular nonverbal expression for self-presentational purposes cannot always be successfully translated into the actual production of that expression. The literatures on people's skills at using their nonverbal behaviors to feign internal states and to deceive are reviewed as they pertain to the question of whether people can overcome the many constraints on the translation of their intentions into expressions. The issue of whether people's deliberate attempts to regulate their nonverbal behaviors can be detected by others is also considered.

Humans↗