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Related Experiment Video

Updated: Jul 4, 2026

A Conflict Model of Reward-seeking Behavior in Male Rats
06:11

A Conflict Model of Reward-seeking Behavior in Male Rats

Published on: February 20, 2019

Neural response to reward and pathological personality dimensions.

Mohan Li1, Brady D Nelson1

  • 1Department of Psychology, Stony Brook University, Stony Brook, NY 11794-2500, United States.

Biological Psychology
|July 2, 2026
PubMed
Summary

The reward positivity (RewP) brain response differs in individuals with internalizing psychopathology. Detachment traits correlate with a smaller RewP, while negative emotionality correlates with a larger RewP.

Keywords:
AnxietyDepressionElectroencephalographyPathological personalityReward positivity

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Psychology

Background:

  • The neural response to reward is linked to internalizing psychopathology.
  • Reward positivity (RewP) reflects reward sensitivity and reinforcement learning.
  • Previous studies show blunted RewP in depression and enhanced RewP in anxiety.

Purpose of the Study:

  • To investigate the association between pathological personality dimensions and the RewP.
  • To determine if the RewP relates to underlying traits of internalizing psychopathology.

Main Methods:

  • 496 young adults (18-35 years) completed the doors task with electroencephalography (EEG) recording.
  • EEG measured the RewP, an event-related potential.
  • Participants completed self-report measures of negative emotionality and detachment traits.

Main Results:

  • Increased detachment was associated with a reduced RewP amplitude.
  • Increased negative emotionality was associated with an enhanced RewP amplitude.
  • Pathological personality dimensions showed opposing relationships with the RewP.

Conclusions:

  • The RewP demonstrates distinct associations with pathological personality dimensions relevant to internalizing psychopathology.
  • These findings suggest the RewP may reflect underlying personality traits rather than just current symptoms.