The Woodcock-Johnson Tests of Cognitive Abilities is a set of intelligence tests

Intelligence quotient

An intelligence quotient, or IQ, is a score derived from one of several different standardized tests designed to assess intelligence. When modern IQ tests are constructed, the mean score within an age group is set to 100 and the standard deviation to 15...

 first developed in 1977 by Woodcock and Johnson. It was revised in 1989 and again in 2001; this last version is commonly referred to as WJ-III. They may be administered to children from age two right up to the oldest adults (with norms utilizing individuals in their 90s). WJ-III is praised for covering "a wide variety of cognitive skills."

Content of the tests

There are 10 tests in the Standard Battery, and an additional 10 in the Extended Battery, allowing for a considerably detailed analysis of cognitive abilities. The Cattell-Horn-Carroll theory factors that this test examines are: Comprehension-Knowledge, Long-Term Retrieval, Visual-Spatial Thinking, Auditory Processing, Fluid Reasoning, Processing Speed, Short-Term Memory and Quantitative Knowledge and Reading-Writing Ability. A General Intellectual Ability (GIA) or Brief Intellectual Ability (BIA) may be obtained.

Published versions

The test is currently in its third edition. A normative update was made available in 2007.