El objetivo de esta investigación fue examinar la confiabilidad y validez de la Escala Integral de Calidad de Vida para población con discapacidad intelectual y del desarrollo, en población chilena. Este es uno de los principales instrumentos empleados para evaluar la calidad de vida en esta población desde una doble perspectiva objetiva, completada por los profesionales a cargo, y subjetiva administrada a los propios sujetos. Para ello, han participado 751 estudiantes y 82 profesionales. Los principales resultados demuestran que existe una adecuada fiabilidad del instrumento en población chilena y la estructura factorial es totalmente congruente con la versión española. Los resultados confirman que la Escala Integral es un instrumento válido y con una óptima fiabilidad en población chilena para evaluar la calidad de vida de personas con discapacidad intelectual y del desarrollo.

The main objective of this study was the adaptation of the scale named AUTODDIS in the cultural and social dimensions and analyze its reliability and validity. The reliability and validity were assessed through a pilot study conducted with a population of students with intellectual disabilities. The linguistic adaptation was done through expert judgment, including each indicator: the adequacy, the coherence, the relevance, and the clarity. After the scale adaptation, the scale pilot was conducted to explore its technical properties. It was performed in a public school for students with intellectual disabilities. For the content, the validity coefficient result was 0,998 while the complete reliability result was α, 978. For the reliability subscales, the results were the following: Autonomy α, 941; self-initiation α, 925; self-direction α, 970; self-regulation α, 804, and self-concept α, 935. The results confirm the AUTODDIS scale as a valid and reliable instrument to evaluate the self-determination. However, it is necessary to apply to a larger number of people with intellectual disability to generalize these results.

The main objectives of this study were to adapt the AUTODDIS scale to the cultural and social dimensions of Chile and to analyze its reliability and validity. The reliability and validity were assessed through a pilot study conducted with a population of students with intellectual disabilities (ID). The linguistic adaptation was executed according to expert judgments of each indicator: adequacy, coherence, relevance, and clarity. After the scale adaptation, a scale pilot was conducted to explore its technical properties. It was performed in a public school for students with ID. The validity coefficient result was 0.998, while the complete reliability result was α = 0.978. For the reliability subscales, the results were the following: autonomy α = 0.941, self-initiation α = 0.925, self-direction α = 0.970, self-regulation α = 0.804, and self-concept α = 0.935. The results confirm the AUTODDIS scale as a valid and reliable instrument to evaluate self-determination. However, it is necessary to apply this scale to a larger number of students with ID to generalize these results.