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First impression matters: the influence of initial impression on reversal learning

Shin, Yeon Soon, Kim, Hye-Young and Han, Sanghoon (2012) First impression matters: the influence of initial impression on reversal learning. In: Cognitive Neuroscience Society, 2012-03-31 - 2012-04-03, Chicago.

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Abstract

Although an impression such as extraversion, one of the big five personality traits, can be formed rapidly even at neutral faces, a caveat of rapid impression is its inaccuracy. Given that people tend to learn and update the actual personality trait as experience with the person accumulates, the reversal learning often plays a more fundamental role in an impression formation during person perception. With a model-based functional magnetic resonance imaging (fMRI), we examined neural substrates of an impression reversal learning and an effect of perceived initial trait on it. We scanned a prediction task during which participants made guesses about whether the target face, who was initially judged introverted or extraverted, would perform the presented activities, either introverted or outgoing. Participants were provided with trial-by-trial feedback indicating whether the target person had preferred extraverted activities or introverted ones. The behavioral result reliably indicated that the initial impression of Introverted is more sluggishly reversed to Extraverted (IE) than Extraverted to Introverted (EI). Our model-based fMRI results with temporal difference learning model revealed activation in nucleus accumbens, ventromedial prefrontal cortex, and hippocampal/parahippocampal regions as a function of prediction error fitted at feedback events for IE reversal. In contrast, for EI reversal, insula, fusiform gyrus, medial prefrontal cortex, and parietal lobe were activated. Along expected value signals at face presentation, dorsal striatum showed an interaction between first impression and personality. The results suggest that, during impression reversal, IE requires more valuation updates whereas EI is better learned with greater emotional response. Abstract taken from p.233 http://www.cogneurosociety.org/wpcontent/uploads/2016/06/CNS2012_Program.pdf

Item Type: Conference or Workshop Item (Poster)
Official URL: https://www.cogneurosociety.org/
Additional Information: © 2012 The Authors
Divisions: Management
Subjects: B Philosophy. Psychology. Religion > BF Psychology
H Social Sciences
Date Deposited: 12 Nov 2019 14:54
Last Modified: 12 Jan 2020 00:16
URI: http://eprints.lse.ac.uk/id/eprint/102421

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