The Brief Symptom Inventory (BSI) as a screening tool for psychological disorders in patients with epilepsy and mild intellectual disabilities in residential care

This study examines the usefulness of the Brief Symptom Inventory (BSI) as a screening tool for psychological disorders in patients with epilepsy and mild intellectual disabilities. Participants were 91 residents of the Bethel Institute, Bielefeld, Germany. Cronbach's α was revealed to be sufficient for the composite score Global Severity Index (GSI) (0.95) and for most of the subscales (0.64-0.80). Compared with normative data, residents with epilepsy scored slightly higher on all BSI scales. Only the subscale Paranoid Ideation was especially elevated, a finding of heuristic value. Subgroups of residents with past psychiatric morbidity, on current psychotropic medication, with poor seizure control, and more epilepsy-related problems either tended toward or demonstrated higher GSI scores. These results indicate the validity of the questionnaire with the GSI as a global indicator of possible psychopathology. BSI subscales seemed to reflect predominantly the amount of emotional distress, but their potential to identify specific clinical syndromes remained unclear.