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The validation of a scale to measure cognitive development in Chinese preschool children

Cynthia Leung1, Rose Mak, Vanessa Lau

  • 1Department of Applied Social Sciences, The Hong Kong Polytechnic University, Hung Hom, Hong Kong. ssleung@polyu.edu.hk

Research in Developmental Disabilities
|May 14, 2013
PubMed

Insights

The Preschool Developmental Assessment Scale (PDAS) cognitive sub-test reliably identifies developmental disabilities in Hong Kong preschoolers. This screening tool shows strong validity and accuracy for early detection.

Area of Science:

  • Child Psychology
  • Developmental Pediatrics
  • Educational Assessment

Background:

  • Early identification of developmental disabilities is crucial for intervention.
  • Existing assessment tools may require adaptation for specific cultural contexts.
  • The Preschool Developmental Assessment Scale (PDAS) is a tool used for evaluating preschooler development.

Purpose of the Study:

  • To evaluate the reliability and validity of the cognitive sub-test of the PDAS for Hong Kong Chinese children.
  • To determine the PDAS cognitive sub-test's effectiveness in differentiating age groups and developmental status.
  • To assess the PDAS cognitive sub-test as a screening tool for developmental disabilities.

Main Methods:

  • 378 Hong Kong children (3-6 years) participated, including those with typical development and developmental disabilities.
  • Children were administered the PDAS cognitive sub-test and the Wechsler Preschool and Primary Scale of Intelligence - Revised (WPPSI-R).
  • Statistical analyses assessed correlations, age/developmental group differentiation, sensitivity, specificity, internal consistency, and test-retest reliability.

Main Results:

  • PDAS cognitive sub-test scores positively correlated with WPPSI-R scores.
  • The sub-test effectively differentiated between age groups and between children with typical development and those with developmental disabilities.
  • Sensitivity and specificity were approximately 80%, with strong internal consistency (KR-20 = .93) and test-retest reliability (r = .81).

Conclusions:

  • The PDAS cognitive sub-test demonstrates good reliability and validity for Hong Kong Chinese preschoolers.
  • It serves as a promising screening tool for identifying preschool children with developmental disabilities.
  • The findings support the use of the PDAS cognitive sub-test in early childhood developmental assessments in this population.

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