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Direct linkGomez, Laura E.; Arias, Benito; Verdugo, Miguel Angel; Navas, Patricia – Journal of Intellectual & Developmental Disability, 2012
Background: Most instruments that assess quality of life have been validated by means of the classical test theory (CTT). However, CTT limitations have resulted in the development of alternative models, such as the Rasch rating scale model (RSM). The main goal of this paper is testing and improving the psychometric properties of the INTEGRAL…
Descriptors: Evidence, Models, Mental Retardation, Quality of Life
Gomez, Laura Elisabet; Arias, Benito; Verdugo, Miguel Angel; Navas, Patricia – Social Indicators Research, 2012
The goal of this article consists of describing the calibration of an instrument to assess quality of life-related personal outcomes using Rasch analysis. The sample was composed of 3.029 recipients of social services from Catalonia (Spain) and was selected using a probabilistic polietapic sample design. Results related to unidimensionality, item…
Descriptors: Foreign Countries, Social Services, Test Bias, Quality of Life
