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.