We aim to determine the correlation between parental rearing, personality traits, and obsessive–compulsive disorder (OCD) in different quantiles. In particular, we created an intermediary effect model in which parental rearing affects OCD through personality traits. All predictors were measured at the time of the survey, comprising parental rearing (paternal rearing and maternal rearing), demographics (grade and gender), and personality traits (neuroticism, extroversion, and psychoticism). These results suggest that (a) paternal emotional warmth was negatively correlated with OCD at the 0.40–0.80 quantile, while maternal emotional warmth was positively correlated with the OCD at the 0.45–0.69 quantile. (b) The correlation between negative parental rearing and OCD ranged from the 0.67 to 0.95 quantile for paternal punishment, 0.14–0.82 quantile for paternal overprotection, 0.05–0.36 and >0.50 quantile for maternal over-intervention and overprotection, and 0.08–0.88 quantile for maternal rejection. (c) Extroversion, neuroticism, and psychoticism were not only associated with OCD in a particular quantile but also mediated between parental rearing (namely parental emotional warmth, paternal punishment, paternal overprotection, maternal rejection, maternal over-intervention, and overprotection) and OCD. These findings provide targets for early interventions of OCD to improve the form of family education and personality traits and warrant validation.

Psychoanalytical, behavioural and cognitive theories assume a continuous process in the development of self-acceptance as an important psychological variable by parent-child interaction during childhood and adolescence. The objective of the present study was to investigate the relationships between perceived parental rearing behaviour and self-acceptance in psychiatric inpatients. The results of extreme group comparisons pointed to the reciprocal discriminative power of parental rearing factors and self-acceptance scores, supporting the hypothesis of a continuous process in the development of self-acceptance and mood traits. Perceived parental rearing predicted aspects of psychopathology in adulthood. The effects of maternal and paternal behaviour appeared to be gender-specific. Alternative interpretations of these findings are discussed.