title: Behavioral and neural correlates of loss aversion and risk avoidance in adolescents and adults.
abstract: Individuals are frequently faced with risky decisions involving the potential for both gain and loss. Exploring the role of both potential gains and potential losses in predicting risk taking is critical to understanding how adolescents and adults make the choice to engage in or avoid a real-life risk. This study aimed to examine the impact of potential losses as well as gains on adolescent decisions during risky choice in a laboratory task. Adolescent (n=18) and adult (n=16) participants underwent functional magnetic resonance imaging (fMRI) during a mixed gambles task, and completed questionnaires measuring real-world risk-taking behaviors. While potential loss had a significantly greater effect on choice than potential gain in both adolescents and adults and there were no behavioral group differences on the task, adolescents recruited significantly more frontostriatal circuitry than adults when choosing to reject a gamble. During risk-seeking behavior, adolescent activation in medial prefrontal cortex (mPFC) was negatively correlated with self-reported likelihood of risk taking. During risk-avoidant behavior, mPFC activation of in adults was negatively correlated with self-reported benefits of risk-taking. Taken together, these findings reflect different neural patterns during risk-taking and risk-avoidant behaviors in adolescents and adults.
authors.affiliation: Department of Psychology, University of California Los Angeles, Los Angeles, CA 90095-1563, USA. ebarkley@ucla.edu
authors.forename: Emily E
authors.initials: EE
authors.lastname: Barkley-Levenson
authors.forename: Linda
authors.initials: L
authors.lastname: Van Leijenhorst
authors.forename: Adriana
authors.initials: A
authors.lastname: Galván
mesh_terms: D000293:Adolescent; D000328:Adult; D001519:Behavior / Q000502:physiology*; D001931:Brain Mapping / Q000379:methods; D002540:Cerebral Cortex / Q000502:physiology; D002755:Choice Behavior / Q000502:physiology; D003657:Decision Making / Q000502:physiology*; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D017397:Prefrontal Cortex / Q000502:physiology*; D011336:Probability; D012201:Reward; D012306:Risk; D012309:Risk-Taking; D055815:Young Adult