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Diversitas: Perspectivas en Psicología
versão impressa ISSN 1794-9998
Resumo
SANCHEZ GONZALEZ, Juan Franco; ATTORRESI, Horacio Felix e JUAN PABLO ABAL, Facundo. Advances in the Study of the Continuity of Neuroticism and its Maladaptive Variant: Application of the Item Response Theory. Divers.: Perspect. Psicol. [online]. 2022, vol.18, n.1, pp.223-236. Epub 01-Jan-2022. ISSN 1794-9998. https://doi.org/10.15332/22563067.6125.
Neuroticism (N), despite being a normal personality trait, is linked to various psychopathologies. The continuity between N and its maladaptive variant, Negative Affectivity (NA), was studied by applying a model of the Item Response Theory (IRT) to two scales that measure these constructs. A total of 619 participants from the general population (64.3% women) answered a protocol that included 20 items of N from the International Personality Item Pool (IPIP-NEO) and 23 items of NA from the Personality Inventory for DSM-5 (PID-5). First, progressive refinement of the N and NA items was carried out based on psychometric criteria from the Graded Response Model. Then, the 22 items retained were calibrated together, although 6 items were eliminated for showing local dependence and adjustment problems. Evidence of the postulated continuity between N and NA was provided. However, a marked overlap was found in the location of the items from both scales in the trait continuum formed by N and AN.
Palavras-chave : neuroticism; negative affectivity; item response theory; personality; personality disorders.