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Validation of Hamdan intelligence scale in upper elementary grades using the Rasch model: exploratory study.

Alaa Eldin A Ayoub1,2, Abdullah M Aljughaiman3, Mariam A Alghawi4

  • 1Department of Gifted Education, Arabian Gulf University, Manama, Bahrain.

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|September 16, 2024
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Summary
This summary is machine-generated.

The Hamdan Intelligence Scale (HIS) demonstrates strong validity and reliability for assessing intelligence in UAE upper elementary students. This study confirms its suitability for use in the United Arab Emirates.

Keywords:
Hamdan Intelligence ScaleRasch analysisintelligencereliabilityunidimensionalityvalidity

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Area of Science:

  • Psychometrics
  • Educational Psychology
  • Cognitive Assessment

Background:

  • The Hamdan Intelligence Scale (HIS) is the first intelligence scale developed and normed in the United Arab Emirates (UAE).
  • Previous assessments of HIS require further examination for validity and reliability in specific age groups.
  • Establishing robust psychometric properties is crucial for educational and psychological evaluations.

Purpose of the Study:

  • To refine, validate, and assess the reliability of the Hamdan Intelligence Scale (HIS) in upper elementary grades (4-6) within the UAE.
  • To utilize the Rasch model for rigorous psychometric analysis of the HIS.
  • To provide empirical evidence supporting the use of HIS in the UAE context.

Main Methods:

  • Administered the HIS to 4,301 students in grades 4-6 in the UAE.
  • Conducted Confirmatory Factor Analysis (CFA) to verify the one-factor model structure.
  • Employed the Rasch model, including Principal Component Analysis of Residuals (PCAR), to evaluate unidimensionality, item fit, and person reliability.

Main Results:

  • Strong correlations were found between HIS and Aurora-g battery (0.83) and Raven's Standard Progressive Matrices (RSPM; 0.86), supporting convergent validity.
  • HIS scores demonstrated a consistent increase with age and grade, indicating developmental trends.
  • Unidimensionality was confirmed, with acceptable item fit (infit/outfit MNSQ: 0.88-1.14 / 0.84-1.14) and person reliability (0.62).

Conclusions:

  • The Hamdan Intelligence Scale (HIS) exhibits strong validity and reliability for assessing intelligence in upper elementary students in the UAE.
  • The Rasch model analysis supports the psychometric integrity of the HIS.
  • Findings provide robust evidence for the continued use and application of the HIS within the UAE's educational and psychological assessment landscape.