The mediatory role of maladaptive schema modes between parental care and non-suicidal self-injury.

Non-suicidal self-injury (NSSI) is being increasingly recognised as a behaviour of significant clinical importance. Yet, there remains uncertainty regarding the underlying mechanisms of NSSI. This study aimed to explore the relationship between maladaptive schema modes, parental bonding, and NSSI. Seventy psychiatric outpatients with a history of NSSI completed the Deliberate Self-Harm Inventory, Schema Mode Inventory, and Parental Bonding Inventory. Results revealed that maladaptive schema modes were significantly associated with low parental care and with an earlier age of onset, longer duration, and higher number of methods of NSSI. Maladaptive schema modes also significantly mediated the relationship between parental care and age of onset of NSSI and between parental care and duration of NSSI. Two maladaptive schema modes (namely, Punitive Parent and Angry Child) were also found to be significant mediators in this relationship. The clinical implications of this research are discussed.