Social dysfunction and skills in schizophrenia: relationship with treatment response and severity of psychopathology

Abstract

Background: Social dysfunction is an important outcome for schizophrenia and can be measured by the evaluation of social skills. Objectives: To compare social skills in patients with schizophrenia classified according the degree of treatment response and severity of psychopathology with normative controls by using the Del Prette Social Skills Inventory (SSI). Methods: Cross-sectional study where the 38 questions SSI was applied to 62 outpatients with schizophrenia and compared with data of 99 normal controls from the general population. The SSI was evaluated by five domains. Psychopathology was measured by the Positive and Negative Syndrome Scale (PANSS). Patients were classified as Treatment Resistant (TRS) and Non Treatment Resistant (NTRS) by the International Psychopharmacology Algorithm Project (IPAP) criteria. ANCOVA was used to control for demographic differences between populations. Results: Patients showed significantly more impaired than controls except for aggressiveness control. When variables such as age, age of onset, schooling or medication dose entered as covariates, differences between controls and patients, or TRS with NTRS, almost disappeared. The SSI and PANSS showed an inverse relationship between their domains. Discussion: The SSI may represent a useful tool for evaluation of social skills in schizophrenia. Antipsychotics may exert a protective effect on social skills.

Social Skill Inventory-2 Del-Prette: expanding and updating psychometric properties

“…The SSI-Del-Prette has been used in the assessment of many social skills programs, for example, with psychotic patients (Elkis et al, 2016) and with non-clinical population searching for work (Lopes, Gerolamo, Del Prette, Musetti, & Del Prette, 2015;Pereira-Guizzo, Del Prette, & Del Prette, 2019). The studies added validity evidences and reliability indicators to the instrument, whose items were kept almost entirely in SSI2-Del-Prette.…”