Approach behavior and sympathetic nervous system reactivity predict substance use in young adults

Publication date: Available online 10 May 2016
Source:International Journal of Psychophysiology
Author(s): J. Benjamin Hinnant, Alissa B. Forman-Alberti, Anna Freedman, Lindsay Byrnes, Kathryn A. Degnan
A behavioral measure of approach (performance on a resource gathering task) in combination with sympathetic nervous system (SNS) reactivity was used to predict substance use in a sample of young adults (n=93). Pre-ejection period reactivity (PEP-R), a cardiac index of SNS reactivity, was recorded during the resource gathering task (task PEP – resting PEP). Higher levels of approach behaviors on the task in combination with less PEP-R (blunted SNS reactivity) predicted the highest levels of substance use. Findings are discussed in the context of behavioral and physiological systems of approach and avoidance.



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