The Associations between Obsessive Compulsive Personality Traits, Self-Efficacy, and Exercise Addiction.

Exercise addiction refers to maladaptive exercise patterns involving compulsivity and addiction-like behaviors. Exercise addiction has been found to relate to negative physical and mental health outcomes such as heart abnormalities, physical injuries, and interpersonal conflicts. Based on the social cognitive theory, this study investigated the extent to which the interplay of obsessive compulsive personality disorder (OCPD) traits and self-efficacy beliefs would influence the development and maintenance of exercise addiction. A total of 1228 college students in the United States responded to an online survey. Based on cut-off scores of the Revised Exercise Addiction Inventory, the prevalence estimates of exercise addiction were 4.0% for males and 1.8% for females. Results showed that males are more prone to exercise addiction than females. Also, OCPD traits and self-efficacy significantly predicted exercise addiction after controlling for age and sex. Self-efficacy acted as a moderator in influencing the relationship between OCPD traits and exercise addiction, especially for females. At high levels of self-efficacy, more OCPD traits were significantly associated with a higher risk of exercise addiction. However, at low levels of self-efficacy, there was no association between OCPD traits and exercise addiction. The findings suggest that public education and intervention for exercise addiction should attend to the interplay between personality factors and sex.

Sibling Violence and Psychological Adjustment: The Role of Maladaptive Coping and Maternal Authoritativeness.

This study examined the phenomenon of sibling violence in Singapore. The underlying mechanisms through which maternal authoritativeness and maladaptive coping influenced psychological adjustment following sibling violence were also investigated. Questionnaires were administered to 287 female and 128 male Singaporean college students between the ages of 18 to 27. Results showed that lifetime and past-year prevalence estimates of sibling violence in college students in Singapore were 89.9% and 62.0%, respectively. Lifetime psychological sibling violence involvement and past-year sibling violence involvement (both physical and psychological) were significantly related to maladaptive coping and overall psychological adjustment; lifetime sibling violence involvement was significantly related to maternal authoritativeness, anxiety, and depression only. Maladaptive coping was found to be a significant mediator between past-year physical and psychological sibling violence involvement and two measures of psychological adjustment, anxiety and depression. Maternal authoritativeness functioned as a moderator only for the relationship between past-year psychological sibling violence exposure and psychological adjustment. At low but not high levels of maternal authoritativeness, past-year psychological violence involvement was significantly related to higher levels of anxiety and depression, and lower levels of self-esteem. These findings show that sibling violence is a pervasive problem in Asian countries as well, such as in Singapore. There is a need to educate both the public and the relevant authorities so that steps can be taken to protect those who have experienced or are at risk of experiencing such violence. Through elucidating the role of maternal authoritativeness and maladaptive coping, the present study also suggests new avenues for interventions to reduce the adverse effects of sibling violence. Limitations and future directions are also discussed.