Usefulness of scl-90-r and sims inventories for the detection of mental health malingering at workplace

Abstract

Mental illness is a common cause of work leave. This situation has a negative impact on labor productivity and costs, and may contribute to conflicts affecting workplace environment. The purpose of this investigation is to describe the evaluation results of a total of 89 cases on sick leave for psychological and psychiatric reasons, and to test the convergent validity of scales in the “Positive Symptom Total” (PST) and Positive Symptom Distress” (PSDI) of the Symptom Checklist Revised (SCL-90-R) by means of the Structured Inventory of Malingered Symptomatology (SIMS). Taking a score higher than 16 in the SIMS as the cut-off point, the analysis focused on whether PST and PSDI scales presented differences in average between malingers and non-malingers. From the total number of cases, 66 were found to be likely cases of malingered mental illness, with different averages in PST (77.02) and PSDI (2.71). Statistical correlation tests allowed to objectify convergent validity and statistical significance between the PSDI and PST scales of the inventory SCL-90-R and the SIMS inventory, with a higher average in PSDI scale (0.617) as compared with PST scale (0.413) in Spearman’s rho. The results of the investigation confirm the usefulness of both instruments for the assessment of mental illness malingering in employers on sick leave due to mental disorders.