期刊
DEVELOPMENTAL COGNITIVE NEUROSCIENCE
卷 11, 期 -, 页码 75-82出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.dcn.2014.08.010
关键词
Adolescence; Peer influence; Reward processing; Neuroimaging; Striatum; Development
资金
- National Institute on Drug Abuse, NIH [R21DA022546-01]
- National Institute on Alcohol Abuse and Alcoholism, NIH [R01AA020006-01]
Prior research suggests that increased adolescent risk-taking in the presence of peers may be linked to the influence of peers on the valuation and processing of rewards during decision-making. The current study explores this idea by examining how peer observation impacts the processing of rewards when such processing is isolated from other facets of risky decision-making (e.g. risk-perception and preference, inhibitory processing, etc.). In an fMRI paradigm, a sample of adolescents (ages 14-19) and adults (ages 25-35) completed a modified High/Low Card Guessing Task that included rewarded and un-rewarded trials. Social context was manipulated by having participants complete the task both alone and while being observed by two, same-age, same-sex peers. Results indicated an interaction of age and social context on the activation of reward circuitry during the receipt of reward; when observed by peers adolescents exhibited greater ventral striatal activation than adults, but no age-related differences were evinced when the task was completed alone. These findings suggest that, during adolescence, peers influence recruitment of reward-related regions even when they are engaged outside of the context of risk-taking. Implications for engagement in prosocial, as well as risky, behaviors during adolescence are discussed. (C) 2014 The Authors. Published by Elsevier Ltd.
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