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This article may be used for personal use only. This is the author’s version of a work that has been submitted for publication in the Journal of Policy and Practice in Intellectual Disabilities, 11(2):117-127, 2014. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms are not be reflected in this document.
Copyright (2014) International Association for the Scientific Study of Intellectual and Developmental Disabilities and Wiley Periodicals.
Journal of Policy and Practice in Intellectual Disabilities, 11(2): 117-127