OXT and autism spectrum disorder: Following the many studies on the role of oxytocin (OXT) in prosocial behaviour and attachment (see Bartz et al. 2011; Guastella and MacLeod 2012; Bakermans-Kranenburg and van I Jzendoorn 2013 for extensive reviews), OXT has increasingly been investigated for its role in the pathophysiology and potential treatment of the core deficits in autism spectrum disorders (ASD), especially since its nasal administration has suggested some promising results (Andari et al. 2010; Guastella et al. 2010).