Personality Disorders and Mindreading: Specific Impairments in Patients With Borderline Personality Disorder Compared to Other PDs

The capacity of understanding mental states is a complex function which involves several components. Single components can be selectively im- paired in specific clinical populations. It has been suggested that impairments in mindreading are central for borderline personality disorder (BPD). However, empirical findings are inconsistent, and it is debatable whether BPD presents a specific profile of mindreading impairments. The aim of this study is to com- pare BPD and other PDs in mindreading. Seventy-two patients with BPD and 125 patients with other PD diagnoses were assessed using the Metacognition Assessment Interview. BPD showed difficulties in two mindreading functions, dif- ferentiation and integration, even when the severity of psychopathology was con- trolled. These results suggest a specific mindreading impairment in BPD and a strong relationship between these impairments and the severity of psychopathology.