Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/25309
Title: Development of a preschool developmental assessment scale for assessment of developmental disabilities
Authors: Leung, C 
Mak, R
Lau, V
Cheung, J
Lam, C
Keywords: Assessment
Cognitive
Developmental disability
Issue Date: 2010
Publisher: Pergamon Press
Source: Research in developmental disabilities, 2010, v. 31, no. 6, p. 1358-1365 How to cite?
Journal: Research in developmental disabilities 
Abstract: The aim of this paper was to describe the development of the cognitive domain of the Preschool Developmental Assessment Scale (PDAS) for assessment of preschool children with developmental disabilities. The initial version of the cognitive domain consisted of 87 items. They were administered to 324 preschool children, including 240 children from preschools and 84 children with developmental disabilities. Initial Rasch analysis results indicated that the fit statistics of 42 of the items were outside the acceptable range. Based on the fit statistics and considering the overall structure of the scale, the revised version consisted of 40 items and this version conformed to the Rasch expectations. The revised 40-item scale could differentiate between children with typical development and children with developmental disabilities. It could also differentiate between children from different age groups. The internal consistency estimate (KR-20) was .93. The cognitive domain of the PDAS is considered a promising developmental assessment tool for assessment of developmental disabilities.
URI: http://hdl.handle.net/10397/25309
ISSN: 0891-4222
EISSN: 1873-3379
DOI: 10.1016/j.ridd.2010.07.004
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