In smiles we trust? Smiling in the context of antisocial and borderline personality pathology

Lawrence Ian Reed, Ashley K Meyer, Sara J Okun, Cheryl K Best and Jill M Hooley

PLOS ONE, 2020, vol. 15, issue 6, 1-12

Abstract: Research suggests that people behave more cooperatively towards those who smile and less cooperatively towards those with personality pathology. Here, we integrated these two lines of research to model the combined effects of smiles and personality pathology on trust. In two experiments, participants read vignettes portraying a person with either borderline personality disorder, antisocial personality disorder, or no personality pathology. These portrayals were paired with a brief video clip that showed a person with either a neutral expression or a smile. Participants then played a Trust game with the “person” presented using each vignette and video clip combination. In Experiment 1, rates of trust were lower in response to the borderline and antisocial personality disorder vignettes compared with the control vignette. Interestingly, the effect of smiles was dependent upon personality. Although participants were more trusting of smiling confederates portrayed as having borderline personality disorder or no pathology, they were less trusting of confederates portrayed as having antisocial personality disorder if they smiled. In Experiment 2, run with a second set of personality vignettes, rates of trust were lower in response to both personality disorder vignettes and higher in response to smiles with no significant interaction. Together, these results suggest that information regarding both the current emotional state as well as the personality traits of a partner are important for creating trust.

Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0234574

DOI: 10.1371/journal.pone.0234574

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