Social conformity is a heuristic when individual risky decision-making is disrupted

Area of Science:

• Neuroscience
• Cognitive Psychology
• Decision Science

Background:

• Humans integrate social cues and personal preferences for risky decisions.
• Understanding decision-making when preferences are inaccessible or disrupted is crucial, particularly in neurological conditions.

Purpose of the Study:

• To investigate how insular or dorsal anterior cingulate cortex lesions affect risky decision-making, especially in social contexts.
• To determine if disrupted utility-based computations lead to altered social decision-making strategies.

Main Methods:

• A gambling task was administered to participants with insular or dorsal anterior cingulate cortex lesions.
• Choices were made both individually and after observing others' decisions.
• Analysis focused on utility-based computations and conformity behavior.

Main Results:

• Both lesion groups exhibited disrupted utility-based computations for risky options.
• Participants with lesions showed increased conformity to others' choices in social decision-making.
• This conformity was independent of social utility computations.

Conclusions:

• Insular and dorsal anterior cingulate cortex are vital for processing risk and integrating social information.
• When standard risk processing is impaired, individuals may default to social conformity as a decision heuristic.
• Findings shed light on adaptive strategies in compromised decision-making systems.