Social-cognitive deficits and restricted, repetitive behaviors are core autism symptoms, and they may both be characterized by dysregulated goal-directed responses to affective stimuli, such as situations that typically evoke emotion. In this project, ASD individuals will be exposed to various stimuli (i.e. neutral, emotional, and social stimuli) and their motivational responses will be evaluated using painless, noninvasive psychophysiological measures. The information learned from this study will add to the understanding of the pathophysiology of autism. In the future, the psychophysiological measures studied in this project could be evaluated for their utility as diagnostic tests or biomarkers of treatment response.