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The WJ III NU Tests of Cognitive Abilities is based on the Cattell-Horn-Carroll (CHC) theory of cognitive abilities, which combines Cattell and Horn's Gf-Gc theory and Carroll's three-stratum theory. The CHC theory provides the most comprehensive framework available for understanding the structure of human cognitive abilities.

The Standard Battery consists of tests 1 through 10, and the Extended Battery includes tests 11 through 20. Depending on the purpose and extent of the assessment, examiners can use the Standard Battery alone or in conjunction with the Extended Battery.

New features of the WJ III NU Tests of Cognitive Abilities include:



Administration time varies, about 5 minutes per test. Cognitive Standard 7 tests (35-45 minutes).

Professionals can use the WJ III NU to:

Practitioners now can get interpretive information from 19 test cluster scores to help measure performance levels, determine educational progress, and identify individual strengths and weaknesses. The Standard Battery provides 10 cluster scores. The Extended Battery provides nine additional cluster scores (see chart).


Technical Qualities

Brief Intellectual Ability
The WJ III NU Tests of Cognitive Abilities now provides a brief measure of intelligence with the Brief Intellectual Ability (BIA) score, complete with its own test record. The BIA takes about 10 to 15 minutes to administer and is especially useful for screenings, re-evaluations that don't require a comprehensive intellectual assessment, or research that needs a short but reliable measure of intelligence. If examiners need to test a subject more thoroughly or focus on a specific area of concern, they can administer additional co-normed tests from the WJ III NU Tests of Cognitive Abilities. Because examiners don't have time to start testing all over again, the BIA saves time and effort.

The BIA score is derived from three cognitive tests: Verbal Comprehension, Concept Formation, and Visual Matching. It provides a mixed measure of three abilities: Comprehension-Knowledge (Gc), Fluid Reasoning (Gf), and Processing Speed (Gs), which represent the best sample on an individual's verbal ability, thinking ability, and efficiency in performing cognitive tasks.

General Intellectual Ability
The WJ III NU Tests of Cognitive Abilities provides a more comprehensive assessment of general ability (g) than most other measures of intelligence. The General Intellectual Ability (GIA) score in the WJ III NU is based on a weighted combination of tests that best represents a common ability underlying all intellectual performance. Examiners can get a GIA (Std) score by administering the first 7 tests or a GIA (Ext) score by administering all 14 cognitive tests. Each of the cognitive tests represents a different broad CHC factor. These factor scores provide important diagnostic information and the best analysis of intra-individual variability. With the WJ III NU Compuscore and Profiles Program, practitioners can calculate both CHC broad factors scores and a GIA score.

The WJ III NU Tests of Cognitive Abilities provides interpretive information from 20 clusters to measure cognitive performance. The Standard Battery contains 6 clusters. The Extended Battery has 14 clusters.

New and Improved Measures
The WJ III NU Tests of Cognitive Abilities includes new measures of executive functioning and working memory that provide an overall index of attention to cognitive tasks. Three cognitive tests?Planning, Pair Cancellation, and Concept Formation?measure aspects of executive functioning including mental control and forethought, interference control, and cognitive flexibility. Planning and Pair Cancellation are both new tests.

Attention problems and working memory also affect cognitive functioning and performance. The WJ III NU measures both attention and working memory with several new tests and clusters. The new Broad Attention cluster contains four tests?Numbers Reversed, Auditory Working Memory, Auditory Attention, and Pair Cancellation.

These tests measure attentional capacity, ability to divide information in short-term memory into distinct sequences, attending to and discriminating speech sounds while dealing with auditory distortion, and how well a person can stay on task. Auditory Working Memory, Auditory Attention, and Pair Cancellation are all new tests. The new Working Memory cluster measures the ability to hold information in awareness while performing a mental operation on it and includes the Numbers Reversed and Auditory Working Memory tests.

Broader CHC Factors
The WJ III NU contains broad CHC factors, which include two qualitatively different narrow abilities in each. The broad factors allow scores to be generalized to more situations, making them more valid.


Additional Resources


Essentials of WJ III Cognitive Abilities Assessment
Richard W. Woodcock, Fredrick A. Schrank, 2001
This book will provide professionals with state-of-the-art interpretive guidelines to the cognitive abilities portion of the newly revised Woodcock-Johnson III. Written in an easy-to-read format, it is ideal for anyone who wants to better administer, interpret, and understand the WJ III.

Essentials of WJ III Tests of Achievement Assessment
Richard W. Woodcock, Nancy Mather, Barbara Wendling, 2001
Complementing the Essentials of WJ III Cognitive Abilities Assessment, this volume provides a quick reference to information on the administration, scoring, and interpretation of the newly revised WJ III Tests of Achievement.

Woodcock-Johnson III Reports, Recommendations, and Strategies
Nancy Mather, Lynne Jaffe, 2001
This volume will help Woodcock-Johnson III examiners to prepare useful and descriptive psychoeducational reports and to help educational specialists convert psychoeducational recommendations into measurable goals and objectives for monitoring students' achievement and abilities. The book includes numerous examples of effective diagnostic reports as well as summaries of methods and techniques for implementing recommendations successfully.