Neural processes during adolescent risky decision making are associated with conformity to peer influence

Area of Science:

• Neuroscience
• Developmental Psychology
• Adolescent Behavior

Background:

• Adolescents exhibit heightened sensitivity to peer influence and engage in increased risk-taking behaviors.
• Understanding the interplay between peer influence and risk-taking is crucial for adolescent development and safety.

Purpose of the Study:

• To investigate the relationship between neural responses during risk assessment and behavioral conformity to peer influence in adolescent males.
• To examine how brain activity during decision-making under risk predicts responses to peer passengers promoting safety or risk.

Main Methods:

• Adolescent males (N=83, 16-17 years) underwent functional magnetic resonance imaging (fMRI) while performing the Balloon Analogue Risk Task (BART).
• Participants later completed a simulated driving task, either alone or with a peer passenger (safety- or risk-promoting).
• Neural activation during BART and functional connectivity were analyzed in relation to driving behavior under peer influence.

Main Results:

• Neural activation in the anterior cingulate cortex (ACC) during BART, scaled by decision stakes, correlated with conformity to risky peer influence.
• Stake-modulated functional connectivity between the ventral striatum (VS) and risk-processing regions (ACC, insula) was associated with resistance to risky peer influence during driving.
• These findings suggest neural responses to risk-taking predict behavioral responses to peer influence.

Conclusions:

• Adolescents' neural processing of risk-taking decisions is linked to their susceptibility to peer influence.
• Specific neural pathways, including ACC and VS connectivity, may play a protective role against risky peer influence.
• These insights can inform interventions aimed at mitigating adolescent risk-taking behaviors driven by peer dynamics.