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Estudos Interdisciplinares em Psicologia

On-line version ISSN 2236-6407


FAIAD, Cristiane et al. Psychometric properties of the ISSL in the context of public security. Est. Inter. Psicol. [online]. 2018, vol.9, n.3, suppl.1, pp. 54-72. ISSN 2236-6407.

The aim of this study was to analyze the psychometric properties of the Lipp Adult Stress Symptom Inventory (ISSL) in the context of Public Security. For this purpose, the inventory was applied to 786 Public Security professionals from 18 Brazilian states and several public security institutions. We calculated the discrimination of inventory items by item response theory and factorial dimensions according to the multiple correspondence analysis. From the analysis of the eigenvalues, the scree plot and by the conformity with the theory, only one dimension was observed for the instrument, as opposed to two, as previously reported in the literature. By analyzing the items using IRT, we suggest the exclusion of three items from the instrument, as they do not have sufficient discrimination power. Finally, we suggest new study regarding the psychometric properties of ISSL in other contexts.

Keywords : stress; public security; validity evidence.

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