Journal
DEVELOPMENTAL COGNITIVE NEUROSCIENCE
Volume 8, Issue -, Pages 153-163Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.dcn.2013.09.003
Keywords
Social cognition; Theory of mind; Amygdala; Individual differences; Early childhood
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Funding
- NSF GRF
- UMD Dean's Research Initiative
- Maryland Neuroimaging Center Seed grant
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We investigated the role of the amygdala in mental state inference in a sample of adults and in a sample of children aged 4 and 6 years. This period in early childhood represents a time when mentalizing abilities undergo dramatic changes. Both children and adults inferred mental states from pictures of others' eyes, and children also inferred the mental states of others from stories (e. g., a false belief task). We also collected structural MRI data from these participants, to determine whether larger amygdala volumes (controlling for age and total gray matter volume) were related to better face-based and story-based mentalizing. For children, larger amygdala volumes were related to better face-based, but not story-based, mentalizing. In contrast, in adults, amygdala volume was not related to face-based mentalizing. We next divided the face-based items into two subscales: cognitive (e. g., thinking, not believing) versus affective (e. g., friendly, kind) items. For children, performance on cognitive items was positively correlated with amygdala volume, but for adults, only performance on affective items was positively correlated with amygdala volume. These results indicate that the amygdala's role in mentalizing may be specific to face-based tasks and that the nature of its involvement may change over development. (C) 2013 The Authors. Published by Elsevier Ltd. All rights reserved.
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