Neural systems for guilt from actions affecting self versus others

Area of Science:

• Neuroscience
• Social Psychology
• Cognitive Science

Background:

• Guilt is a fundamental emotion regulating social behavior and adherence to norms.
• Understanding the neural basis of guilt is crucial for comprehending social decision-making.

Purpose of the Study:

• To investigate the neural correlates of guilt by contrasting responses to actions harming self versus others.
• To examine how social consequences modulate guilt intensity and associated brain activity.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was employed with 16 participants.
• Participants evaluated hypothetical scenarios involving harm to self (guilt-self) or others (guilt-other).
• Brain activity was analyzed in relation to guilt intensity and social consequences.

Main Results:

• Participants reported higher guilt intensity for guilt-other scenarios than guilt-self or neutral scenarios.
• Guilt intensity correlated with activation in the dorsomedial PFC, superior frontal gyrus, supramarginal gyrus, and anterior inferior frontal gyrus.
• Harm to others, compared to self, engaged the ventromedial PFC, precuneus, posterior cingulate, and posterior superior temporal sulcus.

Conclusions:

• The findings suggest distinct neural mechanisms underlie guilt responses to self- versus other-directed harm.
• Specific brain regions, including the left anterior inferior frontal gyrus and left ventromedial PFC, are critical for intensifying guilt based on social consequences.
• These neural patterns highlight the heightened social cost associated with harming others.