The unitary ability of IQ in the WISC-IV and its computation
Orsini, A., Pezzuti, L., Hulbert, S., Sapienza University of Rome and Canterbury Christ Church University 2014. The unitary ability of IQ in the WISC-IV and its computation. Personality and Individual Differences. 69, pp. 173-175.
|Authors||Orsini, A., Pezzuti, L., Hulbert, S., Sapienza University of Rome and Canterbury Christ Church University|
Flanagan and Kaufman (2009) use a difference of 23 IQ points between the highest score (Max) and the lowest score (Min) reported by subjects in the 4 Indexes of Verbal Comprehension, Perceptual Reasoning, Working Memory and Processing Speed to define unitarity of IQ in the WISC-IV. Such a difference in scores is considered very rare and the authors therefore conclude that the total IQ scores in these cases cannot be interpreted. Hereby, we want to argue against the choice of this cut-off threshold value by showing that it was based on the wrong standard deviation value when first computed.
|Keywords||IQ unitarity; WISC-IV; Max–Min|
|Journal||Personality and Individual Differences|
|Journal citation||69, pp. 173-175|
|Digital Object Identifier (DOI)||doi:10.1016/j.paid.2014.05.023|
|Publication process dates|
|Deposited||31 Oct 2014|
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