  social value orientation  characterizes individual differences in anchoring attitudes towards the division of resources . here , 
 by contrasting people with prosocial and individualistic orientations using functional magnetic resonance imaging , we demonstrate that degree of inequity aversion in prosocials is predictable from amygdala activity and unaffected by cognitive load . 
 this result suggests that automatic emotional processing in the amygdala lies at the core of prosocial value orientation . 
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