OXT and Borderline personality disorder: Bendix et al. (2015) discovered that plasma oxytocin levels varied across participants and was correlated to personality traits such as monotony avoidance and impulsiveness. In addition, previous studies have indicated that the effect of oxytocin depends on personal conditions such as borderline personality disorder and attachment during childhood (Bartz et al., 2010b, 2011b). The positive effects of oxytocin on sociality depend on receptor genotype (Marsh et al., 2012; Kosaka et al., 2016).