Brain structures associated with individual differences in decisional and emotional forgiveness

Area of Science:

• Neuroscience
• Psychology
• Neuroimaging

Background:

• Forgiveness is crucial for interpersonal conflict resolution.
• Previous studies explored forgiveness activation patterns but not structural differences.
• Individual variations in brain structures linked to decisional and emotional forgiveness remain unclear.

Purpose of the Study:

• To investigate the neuroanatomical correlates of decisional forgiveness and emotional forgiveness.
• To explore individual differences in brain structures associated with these two facets of forgiveness.

Main Methods:

• Voxel-based morphometry study involving 295 participants (85 men, 210 women).
• Participants completed the Decisional Forgiveness Scale (DFS) and Emotional Forgiveness Scale (EFS).
• Anatomical magnetic resonance imaging (MRI) scans were acquired.

Main Results:

• Higher DFS scores correlated with greater gray matter (GM) volume in the orbitofrontal cortex (OFC).
• Higher EFS scores correlated with greater GM volume in the medial prefrontal cortex (mPFC) and superior frontal gyrus (SFG).
• Higher EFS scores also correlated with smaller GM volumes in the left inferior parietal lobule (IPL).
• Gray matter volume (GMV) in OFC, mPFC, and SFG partially mediated the relationship between DFS and EFS.

Conclusions:

• Provides neuroanatomical evidence linking decisional and emotional forgiveness to specific brain regions.
• Identified brain regions (OFC, mPFC, SFG, IPL) are critical for cognitive control, theory of mind, and moral judgment.
• Findings elucidate the structural brain basis of individual differences in forgiveness.