This study examined the behavioral effects of d-amphetamine and recreational activities, alone in combination, high low impulsive sensation seekers. Healthy 18-27 year-old participants, scoring upper (N=8) or lower third college students on sensation-seeking scale Zuckerman-Kuhlman Personality Questionnaire, completed eight test days which sessions were before (i.e., baseline) 60, 120 180 minut...