Practical Assessment, Research & Evaluation is a peer-
reviewed scholarly journal freely accessible on the internet
at
http://ericae.net/pare

PARE has just published Taub, Gordon E. (2001). A
confirmatory analysis of the Wechsler Adult Intelligence
Scale-third edition: Is the verbal/performance discrepancy
justified? Practical Assessment, Research & Evaluation,
7(22). Available online:
http://ericae.net/pare/getvn.asp?v=7&n=22.

Now, in its third revision, the Wechsler Adult Intelligence
Scale-III has a new factor structure. The theoretical
structure of the new instrument is hierarchical in nature and
contains four first-order factors with a second-order g
factor at the apex. In addition to the theoretical
hierarchical factor structure of the new instrument, there is
an implied factor structure that is used for scoring. This
implied structure contains a Full Scale IQ Index, Verbal IQ
Index, and a Performance IQ Index. This study investigated
the construct validity of both the implied and explicit
theoretical structure of the instrument. The results indicate
the WAIS-III provides an excellent measure of the four factor
model and a general factor. The data, however, did not
support the construct validity of a Verbal IQ
Index/Performance IQ Index dichotomy. These findings and
practical implications for the clinician using the instrument
are discussed


-------------------------------------------------------------
Larry Rudner    mailto:[log in to unmask]
ERIC Clearinghouse on   800 464-3742
Assessment and Evaluation       301 405-7449
1129 Shriver Laboratory
College Park, MD 20742  http://ericae.net

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