The unitary ability of IQ in the WISC-IV and its computation

Journal article


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. https://doi.org/10.1016/j.paid.2014.05.023
AuthorsOrsini, A., Pezzuti, L., Hulbert, S., Sapienza University of Rome and Canterbury Christ Church University
Abstract

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.

KeywordsIQ unitarity; WISC-IV; Max–Min
Year2014
JournalPersonality and Individual Differences
Journal citation69, pp. 173-175
PublisherElsevier
ISSN0191-8869
Digital Object Identifier (DOI)https://doi.org/10.1016/j.paid.2014.05.023
Publication dates
PrintOct 2014
Publication process dates
Deposited31 Oct 2014
Output statusPublished
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