A) Investigating the putative prosocial effects of GHB in humans B) Investigating the putative prosexual effects of GHB in humans C) Investigating the neuroendocrine mechanisms of putative prosocial and prosexual effects of GHB in humans D) Investigating electrophysiological effects of GHB in decision-making in humans E) Investigating the functional neurobiology of GHB and its putative prosexual effects in humans