Abstract
This study aimed to examine whether the interpersonal relationship subordinate item of the Life Assessment Scale for the Mentally Ill (LASMI) is related to the Brief Negative Symptom Scale (BNSS) and whether the BNSS predicts disorder and non-disorder in the subordinate items of the LASMI subdomains. An ordinal logistic regression analysis and ROC curves were used to calculate the BNSS score cutoff values for patients with schizophrenia who were hospitalized at a psychiatric hospital for more than 1 year. Fifty-three participants were analyzed. The BNSS revealed the following LASMI items:Voluntary relationships had a cutoff value of 20 or less;spontaneity and association with friends ranged from 30 to 40;and self-assertion, response, and voice volume, ranged from 40 to 50. Furthermore, functions of interpersonal relationship functions were predicted.
