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Original Articles

Factorial Structure of the Quality of Life Questionnaire in a Spanish Sample of Visually Disabled Adults1

Published Online:September 01, 2006https://doi.org/10.1027/1015-5759.21.1.44

Abstract

Abstract. This study presents a new Spanish version of the Quality of Life Questionnaire (QOL.Q;Schalock & Keith, 1993a) for use with adults with visual disability. The QOL.Q was originally developed in English and designed to measure four dimensions of quality of life in populations with mental retardation. The purpose of this paper is to study some psychometric properties of the Spanish translation for a population with visual disabilities. Confirmatory factor analysis (CFA) has been used to check whether the factorial structure of the Spanish version of the questionnaire was similar to the original version. The questionnaire was applied to a sample of 364 adults with visual disability. As the results indicated that the data was not appropriate for the aforementioned structure, an Exploratory factor analysis was carried out with the aim of determining which factorial structure would be most appropriate. As a result, the Spanish version of the questionnaire consists of 24 items assigned to three subscales: Competence (8), Satisfaction (10), and Self-determination (6). A new CFA permitted the testing of the appropriate fit between the responses and the new proposed model. Psychometric analyses of these subscales seem to indicate good measurement properties of the new scale.

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