Validez psicométrica de la versión breve del IMSA en adultos que intentado suicidio
DOI:
https://doi.org/10.37914/riis.v9.529Palabras clave:
suicidio, motivación, impulsividad, psicometríaResumen
Marco contextual: la evaluación de las motivaciones atribuidas es esencial para identificar las razones de los intentos de suicidio. En Brasil, la estructura factorial del Inventory of Motivations for Suicide Attempts aún ha sido poco investigada. Objetivos: evaluar la estructura factorial del Inventory of Motivations for Suicide Attempts, comparar modelos psicométricos concurrentes y examinar evidencias de validez nomológica de la versión breve en adultos con antecedentes de intento de suicidio. Metodología: estudio psicométrico realizado con 296 adultos atendidos en servicios especializados de salud mental. Los participantes respondieron la versión completa del instrumento, a partir de la cual posteriormente se derivó una versión breve basada en criterios teóricos y empíricos. Los participantes también respondieron las versiones completas de la Columbia Suicide Severity Rating Scale y de la Barratt Impulsiveness Scale. Se realizaron análisis factoriales confirmatorios, estimaciones de confiabilidad y modelado de ecuaciones estructurales, dando origen a la versión breve. Resultados: la solución unifactorial de nueve ítems presentó el mejor ajuste global, mayor parsimonia y parámetros consistentes. En la red nomológica, la motivación se correlacionó positivamente con la impulsividad y las razones para la ideación, y negativamente con las razones para no suicidarse, con efectos pequeños sobre la ideación y los intentos de suicidio. Conclusión: la versión breve mostró evidencias de validez y consistencia, configurándose como una alternativa útil para la evaluación clínica y la investigación sobre el comportamiento suicida.
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Derechos de autor 2026 Marcos Soares, Fernanda Machado, Katya Oliveira, Daniela Zanoti
Esta obra está bajo una licencia internacional Creative Commons Atribución 4.0.
