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Abstract: This thesis presents research on the impact of self-relevance and emotion during the processing of social vignettes and the interaction of these effects with task and the mood state of the participant. Two-sentence social vignettes were presented either in second person (self-relevant) or third person (other-relevant). ERPs were time-locked to a critical word toward the end of the second ... read moresentence that was pleasant, neutral, or unpleasant. This paradigm was used to investigate two broad theoretical issues. In Part 1, the N400 is explored as a measure of social knowledge and social cognition, in particular the positive-bias associated with the self-concept. In Parts 2 and 3 the effects of self-relevance, task, and mood state on the late positive potential (LPC) to emotional stimuli are investigated. The general implications of these findings for the study of social cognition and a functional account of the LPC are discussed.
Thesis (M.S.)--Tufts University, 2015.
Submitted to the Dept. of Psychology.
Advisor: Gina Kuperberg.
Committee: Phillip Holcomb, Heather Urry, and Tali Ditman.
Keywords: Cognitive psychology, Neurosciences, and Social psychology.read less
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