AbstractThe diagnostic utility of Bannatyne's recategorized WISC‐R scores in differentiating among children referred to a developmental evaluation center was evaluated. The results failed to provide support for the diagnostic utility of recategorized WISC‐R scores in general and for the pattern spatial 〉conceptual〉sequential in particular. The findings are discussed in terms of the caution necessary regarding the empirical basis for diagnostic inferences and the need for replication and/or evaluation of other potential measures with well‐defined clinic