Propiedades psicométricas de la escala trastorno antisocial del MCMI-III en reclusos adultos
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2016-08-22
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Pontificia Universidad Católica del Perú
Abstract
La violencia y la criminalidad son fenómenos preocupantes dentro de la realidad peruana. Ésto se evidencia en el creciente número de delitos, y el aumento de la población penitenciaria. En este contexto, es necesario contar con instrumentos confiables capaces de medir patologías de la personalidad relacionadas con la conducta antisocial. El presente estudio instrumental tiene como objetivo analizar las propiedades psicométricas de Validez Interna y Confiabilidad de la escala de Trastorno Antisocial de la Personalidad del Inventario Clínico Multiaxial de Millon (MCMI-III). La muestra final estuvo compuesta por 66 jóvenes adultos varones (M=25.44; DE=3.51) recluidos en un establecimiento penitenciario de la ciudad de Lima. El análisis de confiabilidad a través del método de covariación conjunta Alpha de Cronbach arrojó un coeficiente de .729 para la escala de Trastorno Antisocial, mostrando un nivel de fiabilidad adecuado. Del mismo modo, se realizó el análisis de Validez Interna a través del método de correlaciones ítem-test (Pearson) el cual mostró índices de correlación que oscilaron entre .096 y .499 para el total de la escala (17 ítems). Asimismo, se llevó a cabo un análisis de discriminación de ítems con la finalidad de neutralizar aquellas variables con correlaciones inferiores a 0.3, para mejorar el índice de confiabilidad de la escala. La escala resultante estuvo compuesta por 10 ítems, cuyas correlaciones ítem-test oscilaron entre .352 y .527, elevando el coeficiente de confiabilidad a .775. Además, se estimó la prevalencia de sintomatología antisocial en la población, presentándose en el 27.3% de los casos. Estos hallazgos permitieron discutir los alcances y limitaciones de la escala en lo que respecta a la medición del constructo.
Two of the major problems within the Peruvian reality are violence and crime. The evidence is the increasing number of felonies and the rising of the prison population. In this context, it is necessary to have reliable tools to measure the personality pathology related to antisocial behavior. This instrumental study aims to analyze the psychometric properties of Internal Validity and Reliability of the Scale of Antisocial Personality Disorder in the Millon Clinical Multiaxial Inventory (MCMI-III). The final sample was taken from 66 young adult male inmates (M=25.44; DE=3.51) from a prison in the city of Lima. Reliability analysis through the joint covariance method yielded a Cronbach's Alpha coefficient of .729 for Antisocial Disorder Scale, showing an appropriate level of reliability. In turn, analysis of internal validity through correlations item-tests (Pearson) showed correlation coefficients ranging between .096 and .499 for the scale of 17 items. In addition, a removing items process is conducted to promote the reliability of the scale. The Resulting scale consisted of 10 items, whose item-test correlations ranged between .352 and .527, raising the reliability coefficient of .775. Further more, the prevalence of antisocial symptoms in the population, appearing in 27.3% of cases was estimated. These results let on to discuss the scope and limitations of the Scale of Antisocial Personality Disorder of the MCMI-III with regard to the measurement of the antisocial construct.
Two of the major problems within the Peruvian reality are violence and crime. The evidence is the increasing number of felonies and the rising of the prison population. In this context, it is necessary to have reliable tools to measure the personality pathology related to antisocial behavior. This instrumental study aims to analyze the psychometric properties of Internal Validity and Reliability of the Scale of Antisocial Personality Disorder in the Millon Clinical Multiaxial Inventory (MCMI-III). The final sample was taken from 66 young adult male inmates (M=25.44; DE=3.51) from a prison in the city of Lima. Reliability analysis through the joint covariance method yielded a Cronbach's Alpha coefficient of .729 for Antisocial Disorder Scale, showing an appropriate level of reliability. In turn, analysis of internal validity through correlations item-tests (Pearson) showed correlation coefficients ranging between .096 and .499 for the scale of 17 items. In addition, a removing items process is conducted to promote the reliability of the scale. The Resulting scale consisted of 10 items, whose item-test correlations ranged between .352 and .527, raising the reliability coefficient of .775. Further more, the prevalence of antisocial symptoms in the population, appearing in 27.3% of cases was estimated. These results let on to discuss the scope and limitations of the Scale of Antisocial Personality Disorder of the MCMI-III with regard to the measurement of the antisocial construct.
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Trastorno de la personalidad antisocial., Trastornos de la personalidad., Presos.
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