The purpose of this study is to determine whether oxytocin affects the modulation of startle reactivity by aversive social stimuli and to investigate the oxytocin effect on moral judgements. Furthermore the investigators explore the effects of oxytocin receptor (OXTR) polymorphisms on behavioral responses to social stimuli.
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baseline startle magnitude and affective modulation of the startle magnitude after oxytocin and placebo administration
Timeframe: 24 Months