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Woodcock-Johnson Tests of Cognitive Abilities – Third Edition/Normative Update (WJ-III COG/NU)

The Woodcock-Johnson III Tests of Cognitive Abilities – Third Edition/Normative Update (WJ-III COG/NU; Woodcock, McGrew, & Mather, 2005) is a comprehensive set of individually administered co-normed tests for measuring cognitive ability.


The tests may be used from ages 2 through adult. The battery assesses general intellectual ability as well as specific cognitive abilities. Twenty individual tests and 20 Cluster Scores provide broad estimates of cognitive abilities.

The Verbal Ability Cluster Score is a measure of language development that includes the comprehension of individual words and the comprehension of relationships among words. The Thinking Ability Cluster Score represents a sampling of the thinking processes that may be invoked when information in short-term memory cannot be processed automatically. The scale includes samples of long-term retrieval, visual-spatial thinking, auditory processing, and fluid reasoning. The Cognitive Efficiency Cluster is derived from a sampling of two factors of automatic cognitive processing, processing speed, and short-term memory.


Author (yr) Age Range (yrs) Method of Administration/Format Approx. Time to Administer Subscales
Woodcock- Johnson Tests of Cognitive Abilities – Third Edition/Normative Update (WJ-III COG/NU) Woodcock, McGrew, & Mather (2005) 2-90

Individually administered, norm- referenced measure of cognitive abilities; clinician-administered; Ten Standard plus 10 extended subtests (e.g., information processing, planning, speed, memory, attention) based on C-H-C abilities

Yields standard scores, percentiles; age/grade equivalents

​60–90 min.​

General Intellectual Ability, Verbal Ability, Thinking Ability, Cognitive Efficiency; Cognitive Long-Term Retrieval, Comp-Knowledge, Visual- Spatial Thinking, Auditory Processing, Fluid Reasoning, Proc. Speed, Short- Term Memory; Broad Attention, Phonemic Awareness, Working Memory, Cognitive Fluency, Executive Processes

Availability: This page is in the process of being updated to include the most current edition of this assessment, WJ-IV.

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