Héléna Renault, Clara Freeman, Iulia Banica, Aislinn Sandre, Paige Ethridge, Juhyun Park, Anna Weinberg

Neural response to rewards moderates the within‐person association between daily positive events and positive affect during a period of stress exposure

  • Experimental and Cognitive Psychology
  • Neuropsychology and Physiological Psychology
  • Biological Psychiatry
  • Cognitive Neuroscience
  • Developmental Neuroscience
  • Endocrine and Autonomic Systems
  • Neurology
  • Experimental and Cognitive Psychology
  • Neuropsychology and Physiological Psychology
  • General Neuroscience
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AbstractStress and neural responses to reward can interact to predict psychopathology, but the mechanisms of this interaction are unclear. One possibility is that the strength of neural responses to reward can affect the ability to maintain positive affect during stress. In this study, 105 participants completed a monetary reward task to elicit the reward positivity (RewP), an event‐related potential sensitive to rewards. Subsequently, during a stressful period, participants reported on their affect nine times a day and on daily positive and negative events for 10 days. Even during heightened stress, experiencing more positive events was associated with increased positive affect. The RewP significantly moderated this association: Individuals with a larger RewP reported greater increases in positive affect when they experienced more positive events, relative to individuals with a smaller RewP. A blunted RewP might contribute to stress susceptibility by affecting how much individuals engage in positive emotion regulation during stress.

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