Cognitive Assessment, Compositator, My Software & Spreadsheets, Psychometrics

The Compositator: New Software for the Woodcock-Johnson III

I am very excited to announce that the Woodcock-Muñoz Foundation’s WMF Press has published my FREE software program with an admittedly silly name:

The Compositator!

Its purpose is anything but silly, though. The feature that gives it its name is that you can create custom composite scores from any test in three WJ III batteries (Cognitive, Achievement, and Diagnostic Supplement).

For example, Picture Vocabulary and Academic Knowledge from the WJ III Achievement battery can be combined with Verbal Comprehension and General Information from the WJ III Cognitive battery to form a more reliable and more comprehensive measure of crystallized intelligence.

The Compositator is a supplement to the scoring software for the WJ III (either the WJ III Compuscore and Profiles Program or the WIIIP). It will not run on a machine unless one of these programs is installed.

The Compositator not only allows you to combine subtests in a psychometrically sound manner, it allows you to combine statistical information in ways not previously possible. For example, it allows you to create a comprehensive model of reading ability, specifying the relationships among all the various cognitive and academic abilities in the WJ III. From there, you can do things like estimate how much a person’s reading comprehension would improve if auditory processing were remediated. If auditory processing is remediated, what are the simultaneous effects on reading decoding, reading fluency, and reading comprehension?

There is much more that the program can do. I’ve been working on this program for the past 3 years and have been thinking about it since 1999 when I was in graduate school. There is a comprehensive manual and video tutorials to get you started.

Kevin McGrew has been the earliest and most enthusiastic supporter of the program. His generous description of the program is here.

I hope that you find the program useful. I would love to hear from you, especially if you have ideas for improving the program.

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