Conduct Disorder Is Associated With Heightened Action Initiation and Reduced Learning From Punishment but Not Reward

Area of Science:

• Cognitive Neuroscience
• Developmental Psychology
• Psychiatry

Background:

• Conduct disorder (CD) is associated with reinforcement learning deficits and impulsivity.
• Risk-taking behaviors in CD can stem from both learning and impulsivity.
• Computational models are crucial for distinguishing learning from action initiation in CD.

Purpose of the Study:

• To investigate learning and action initiation differences in youths with conduct disorder.
• To use computational modeling to differentiate reward/punishment learning from impulsive action initiation.

Main Methods:

• A large international sample (N=1418) of typically developing youths and youths with CD completed a learning task.
• Computational modeling was employed to separate learning from action initiation.

Main Results:

• Youths with CD exhibited reduced punishment learning rates compared to typically developing peers.
• Individuals with CD showed increased action initiation, independent of outcomes, while reward learning was comparable.
• Action initiation variability in CD correlated with self-reported impulsivity.

Conclusions:

• Findings support impaired punishment learning in CD, with typical reward learning.
• Heightened impulsive action initiation, not just learning differences, may explain some CD behaviors.
• Asymmetric learning and increased action initiation in CD have implications for intervention strategies.