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Related Experiment Videos

Simultaneous-successive factor structure of the WISC-R: a validation study.

T J Conboy, C E McFarland, T J Boll

    Perceptual and Motor Skills
    |October 1, 1986
    PubMed
    Summary

    This study found that the Wechsler Intelligence Scale for Children--Revised (WISC-R) does not have a clear Simultaneous-Successive factor structure. Therefore, clinicians should avoid using this two-factor model for WISC-R interpretation and interventions.

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    Area of Science:

    • Psychometrics
    • Child Psychology

    Background:

    • The Wechsler Intelligence Scale for Children--Revised (WISC-R) has been proposed to have a Simultaneous-Successive factor structure.
    • Previous validation attempts of this model using WISC-R subtests were found to be unreliable.

    Purpose of the Study:

    • To test the validity of the Simultaneous-Successive two-factor model for the WISC-R.
    • To compare the WISC-R's factor structure with the Kaufman Assessment Battery for Children (K-ABC), which has a clear Simultaneous-Sequential structure.

    Main Methods:

    • Factor analysis was used to examine the WISC-R's factor structure.
    • The study involved 36 children aged 6.5 to 12.5 years.
    • The K-ABC served as a comparative measure with a known factor structure.

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    Main Results:

    • The present study's results do not support a significant Simultaneous-Successive factor structure for the WISC-R.
    • The factor structure of the WISC-R was found to be inconsistent with the proposed two-factor model.

    Conclusions:

    • Clinicians should exercise caution when interpreting the WISC-R using the proposed Simultaneous-Successive model.
    • The findings suggest that the WISC-R may not be adequately represented by a Simultaneous-Successive factor structure for diagnostic or remedial purposes.