Cited by 180Deception detection and forensic psychologyNeural and Behavioral Psychology StudiesAcademic integrity and plagiarism

The brain adapts to dishonesty

Open access
Garrett, Neil, Lazzaro, Stephanie C, Ariely, Dan, Sharot, Tali·2016·Nature Neuroscience

Abstract

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.

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  • This result is consistent with studies in both nonhuman primates and in human neuroimaging studies suggesting that the amygdala represents how undesirable an outcome is.

    “This result is consistent with studies in both nonhuman primates 7 and in human neuroimaging studies 16 suggesting that the amygdala represents how undesirable an outcome is.”

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Research works printed but not linked: 2

  1. [2]Kirchner B The Bernard Madoff Investment Scam 2010 FT Press
  2. [34]Winnett R Rayner G No Expenses Spared 2009 Bantam Press

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Authors
Garrett, N., Lazzaro, S. C., Ariely, D., & Sharot, T.
Affiliations
  • University College London (GB)
  • Duke University (US)
Corresponding author
  • Garrett, Neil
  • Sharot, Tali
Venue
Nature Neuroscience
Published
2016-10-24
Volume
19
Issue
12
Pages
1727-1732
ISSN
  • 1097-6256 (ISSN-L)
  • 1546-1726
OpenAlex
W2538748553
Cited by
180
References
46
Citations by year
2026: 12 · 2025: 21 · 2024: 17 · 2023: 23 · 2022: 15 · 2021: 15 · 2020: 23 · 2019: 13 · 2018: 19 · 2017: 18 · 2016: 4
FWCI
29.31
Type
journal article
Language
en
Open access
Locations
  • Nature Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • UEA Digital Repository (University of East Anglia) (submittedVersion)
Funders
Wellcome Trust (093807)
Topics
  • Social Sciences › Psychology › Social Psychology › Deception detection and forensic psychology
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Social Sciences › Safety Research › Academic integrity and plagiarism
Keywords
amygdala, neural adaptation, moral transgression, slippery slope, ethical decision-making
MeSH terms
Adaptation, Biological, Adolescent, Adult, Aged, Behavior, Brain, Decision Making, Female, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Morals, Young Adult

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