A comparison of visual and auditory processing tests on the Woodcock-Johnson Tests of Cognitive Ability,Revised and the Learning Efficiency Test-II

A comparison of the visual and auditory processing factors of the WJR Tests of Cognitive Ability and the visual and auditory memory factors of the Learning Efficiency Test, II were examined for 120 undergraduate college students. Repeated measures ANOVAs revealed two significant performance differences: between the WJR COG and LET-II visual processing factors and between the WJR Broad Cognitive Ability index and the LET Global Memory score. Although there was no significant performance difference on the WJR COG and LET-II auditory processing factors, the two measures were independent, accounting for less than 4% shared variance. Similarly, WJR COG and LET-II visual processing factors also were independent. It was hypothesized that differing levels of task complexity, such as order vs. unordered memory retrieval requirements, semantic meaningfulness of the material presented, and rehearsal and/or presence of verbal interference components, represent distinct performance outcome measures of visual and auditory processing by the WJR COG and LET-II. © 1997 John Wiley & Sons, Inc.