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Direct linkVerdugo, Miguel-Angel; Arias, Benito; Ibanez, Alba; Schalock, Robert L. – American Journal on Intellectual and Developmental Disabilities, 2010
The Supports Intensity Scale (SIS) is used to determine the profile and intensity of the supports needed by a person to participate successfully in major life activities. With its publication into 13 languages, a need has arisen to document its reliability and validity across language and cultural groups. Here we explain the adaptation and the…
Descriptors: Mental Retardation, Validity, Measures (Individuals), Foreign Countries
Gomez, 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
