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Evaluating self- vs. other-owned objects: the modulatory role of oxytocin
Yin Wu1, Eric van Dijk, Xiaolin Zhou
1Center for Brain and Cognitive Sciences, Department of Psychology, Peking University, Beijing 100871, China.
Abstract:
Previous research has shown that the neuropeptide oxytocin promotes various prosocial sentiments, such as trust, generosity and cooperation. Here we investigate whether it plays a role in evaluating self- vs. other-owned objects. Brain potentials were recorded in participants who judged the ownership of objects that were described in either positive or negative terms. Results showed that self-owned objects framed by positive adjectives elicited more positive-going brain responses than those framed by negative adjectives, irrespective of oxytocin or placebo being administrated. Negatively described other-owned objects evoked more positive-going responses than positively described other-owned objects, but the opposite pattern was found with the administration of oxytocin. Thus, oxytocin abolishes other-derogation but does not affect self-enhancement in object evaluation, consistent with the proposal that oxytocin enhances affilliative and approach motivations during social interaction.
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