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Updated: Apr 4, 2026
Functional Imaging with Reinforcement, Eyetracking, and Physiological Monitoring
Published on: November 13, 2008
Punishment and psychopathy: a case-control functional MRI investigation of reinforcement learning in violent
Sarah Gregory1, R James Blair2, Dominic Ffytche3
1Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, King's College London, London, UK.
Background:
Men with antisocial personality disorder show lifelong abnormalities in adaptive decision making guided by the weighing up of reward and punishment information. Among men with antisocial personality disorder, modification of the behaviour of those with additional diagnoses of psychopathy seems particularly resistant to punishment.
Methods:
We did a case-control functional MRI (fMRI) study in 50 men, of whom 12 were violent offenders with antisocial personality disorder and psychopathy, 20 were violent offenders with antisocial personality disorder but not psychopathy, and 18 were healthy non-offenders. We used fMRI to measure brain activation associated with the representation of punishment or reward information during an event-related probabilistic response-reversal task, assessed with standard general linear-model-based analysis.
Findings:
Offenders with antisocial personality disorder and psychopathy displayed discrete regions of increased activation in the posterior cingulate cortex and anterior insula in response to punished errors during the task reversal phase, and decreased activation to all correct rewarded responses in the superior temporal cortex. This finding was in contrast to results for offenders without psychopathy and healthy non-offenders.
Interpretation:
Punishment prediction error signalling in offenders with antisocial personality disorder and psychopathy was highly atypical. This finding challenges the widely held view that such men are simply characterised by diminished neural sensitivity to punishment. Instead, this finding indicates altered organisation of the information-processing system responsible for reinforcement learning and appropriate decision making. This difference between violent offenders with antisocial personality disorder with and without psychopathy has implications for the causes of these disorders and for treatment approaches.
Funding:
National Forensic Mental Health Research and Development Programme, UK Ministry of Justice, Psychiatry Research Trust, NIHR Biomedical Research Centre.
Insights
Men with antisocial personality disorder and psychopathy show atypical brain responses to punishment, challenging the idea of diminished sensitivity. This suggests altered learning and decision-making systems in these individuals.
Area of Science:
- Neuroscience
- Psychiatry
- Forensic Psychology
Background:
- Men with antisocial personality disorder exhibit lifelong decision-making deficits related to reward and punishment.
- Antisocial personality disorder with psychopathy is associated with particularly strong resistance to behavioral modification through punishment.
Purpose of the Study:
- To investigate brain activation patterns in response to reward and punishment information.
- To compare neural responses between violent offenders with and without psychopathy, and healthy controls.
Main Methods:
- A case-control functional MRI (fMRI) study was conducted with 50 male participants.
- Participants included violent offenders with antisocial personality disorder and psychopathy, offenders with antisocial personality disorder only, and healthy non-offenders.
- An event-related probabilistic response-reversal task was used to assess brain activity during punishment and reward feedback.
Main Results:
- Offenders with antisocial personality disorder and psychopathy showed increased activation in the posterior cingulate cortex and anterior insula following punished errors.
- These offenders also exhibited decreased activation in the superior temporal cortex for correct rewarded responses.
- These neural patterns differed significantly from offenders without psychopathy and healthy controls.
Conclusions:
- Punishment prediction error signaling is highly atypical in offenders with antisocial personality disorder and psychopathy.
- Findings challenge the notion of diminished neural sensitivity to punishment, suggesting altered information processing for reinforcement learning and decision-making.
- Differences observed have implications for understanding the etiology and treatment of these disorders.
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