Validity and reliability of an attention deficit and hyperactivity disorder measure for a sample of Omani children

Ibrahim A. Alqaryouti, Maher M. Abu Hilal, Mahmoud M. Ibrahim

Research output: Contribution to journalArticle

1 Citation (Scopus)


Introduction. The purpose of this study was to develop and validate a diagnostic measure of attention deficit, hyperactivity disorder and impulsivity. Method. The instrument was administered to normal (n=51), learning disability (LD) (n=96), and intellectually disabled (ID) (n=108) children. The instrument in its final form comprises 36 items. Results. Reliability analysis, exploratory factor analysis, and confirmatory factor analysis revealed that the instrument possesses good reliability and validity estimates. MANOVA revealed that intellectually disabled, learning disabled and normal children differed significantly on all of the five subscales. The pattern of difference mainly favored I.D. children then L.D. The lowest scores on all of the subscales were those of the normal children. Discussion and Conclusion. It is important that children with L.D. be differentiated from other types of disabilities. The instrument at hand is presumed to make such distinction. Namely, the instrument is a tool to identify children with attention deficit and hyperactivity disorder.

Original languageEnglish
Pages (from-to)911-930
Number of pages20
JournalElectronic Journal of Research in Educational Psychology
Issue number2
Publication statusPublished - Sep 1 2011



  • ADHD
  • Construct validity
  • Intellectual disability
  • Learning difficulty

ASJC Scopus subject areas

  • Education
  • Developmental and Educational Psychology

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