Development of a preschool developmental assessment scale for assessment of developmental disabilities

Man Cynthia Leung, Rose Mak, Vanessa Lau, Jasmine Cheung, Catherine Lam

Research output: Journal article publicationJournal articleAcademic researchpeer-review

27 Citations (Scopus)

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.
Original languageEnglish
Pages (from-to)1358-1365
Number of pages8
JournalResearch in Developmental Disabilities
Volume31
Issue number6
DOIs
Publication statusPublished - 1 Nov 2010

Keywords

  • Assessment
  • Cognitive
  • Developmental disability

ASJC Scopus subject areas

  • Developmental and Educational Psychology
  • Clinical Psychology

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