Common space analysis of several versions of the Wechsler Intelligence Scale for Children

A joint analysis was made of three versions of the Wechsler Intelligence Scale for Children using an individual differences multidimensional scaling approach. The versions of the test considered were the original version, an Australian partial revision, and the current revised version. Common Space Analysis of the correlation data from the manuals showed a common three-dimensional structure. There was a compact group of verbal subtests and a more loosely defined group of performance tests. Arithmetic, Digit Span, and Coding were found to be more peripheral to the battery. No systematic variations in structure could be related to the different age groups