The brain adapts to dishonesty.
Journal Article (Journal Article)
Dishonesty is an integral part of our social world, influencing domains ranging from finance and politics to personal relationships. Anecdotally, digressions from a moral code are often described as a series of small breaches that grow over time. Here we provide empirical evidence for a gradual escalation of self-serving dishonesty and reveal a neural mechanism supporting it. Behaviorally, we show that the extent to which participants engage in self-serving dishonesty increases with repetition. Using functional MRI, we show that signal reduction in the amygdala is sensitive to the history of dishonest behavior, consistent with adaptation. Critically, the extent of reduced amygdala sensitivity to dishonesty on a present decision relative to the previous one predicts the magnitude of escalation of self-serving dishonesty on the next decision. The findings uncover a biological mechanism that supports a 'slippery slope': what begins as small acts of dishonesty can escalate into larger transgressions.
Full Text
Duke Authors
Cited Authors
- Garrett, N; Lazzaro, SC; Ariely, D; Sharot, T
Published Date
- December 2016
Published In
Volume / Issue
- 19 / 12
Start / End Page
- 1727 - 1732
PubMed ID
- 27775721
Pubmed Central ID
- PMC5238933
Electronic International Standard Serial Number (EISSN)
- 1546-1726
International Standard Serial Number (ISSN)
- 1097-6256
Digital Object Identifier (DOI)
- 10.1038/nn.4426
Language
- eng