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The Woodcock-Johnson test battery is a comprehensive assessment tool measuring general intellectual ability, specific cognitive abilities, scholastic aptitude, oral language, and academic achievement across the age range 2 to 90+ years. It provides extended grade norms from kindergarten to university graduate students
It was developed by Richard W. Woodcock, Kevin S. McGrew, and Nancy Mather
It offers two distinct, co-normed batteries:
- Achievement battery has seven additional tests and eight additional clusters; *Cognitive battery has eight additional tests and five additional clusters
Each individual test takes about about 5 minutes so the Cognitive Standard 7 tests take about 35–45 minutes and the Achievement Standard 11 tests 55–65 minutes.
Administration protocols include three intra-individual procedures and three ability/achievement procedures
Scoring software eliminates hand-scoring. The WJ III Compuscore® and Profiles Program and Report Writer facilitating the process..
It is one of the few cognitive tests to offer a calculated “g” score as General Intellectual Ability (GIA), rather than arithmetic mean score. Expanded Broad Achievement clusters contain 3 tests measuring basic skills, fluency, and application The broader cognitive factor scores measure narrow aspects of each broad ability.
Other benefits are
- Tests of Achievement match all seven areas of IDEA legislation
- Oral language tests included in the Achievement battery