OXT and obsessive-compulsive disorder: In the adult population, literature on the use of intranasal oxytocin has spanned the last six decades in research, with early reports focusing on its role in obstetrics (Hendricks and Pose, 1961; Cohen et al., 1962), followed by exploration of oxytocin's possible application to the field of psychiatry, in particular, obsessive compulsive disorder (Ansseau et al., 1987; Den Boer and Westenberg, 1992) and symptoms of post-traumatic stress disorder (Pitman et al., 1993; Olff, 2012).