Diagnostic Supplement to the WJ III Tests of Cognitive Abilities

CATEGORIES: Ability

SUMMARY

The Diagnostic Supplement (DS) expands on the diagnostic capabilities of the WJ III® Tests of Cognitive Abilities with eleven new tests, new clusters, and new interpretive procedures that will enhance the diagnostic usefulness of the cognitive battery. Through use of these additional tests and clusters, the DS provides a more complete evaluation of an individual's relative cognitive strengths and weaknesses. It is designed for use in educational, clinical, or research settings with individuals who are age 2 - 90+. The Diagnostic Supplement is ideal for bilingual assessment, early childhood assessment, or other purposes when a language-reduced cognitive ability score is required.

Since the Diagnostic Supplement is co-normed with the Woodcock-Johnson® III, it provides more accurate and valid comparisons between and among the Cattell-Horn-Carroll (CHC) abilities than would be possible by comparing separately normed instruments. The DS also offers professionals:

• A General Intellectual Ability-Bilingual Scale (GIA-Bil)
• A Broad Cognitive Ability-Low Verbal Cluster (BCA-LV)
• A General Intellectual Ability, Early Development Scale (GIA-Edev)
• Memory for Names, a popular subtest from the Woodcock-Johnson-Revised, with new and more colourful space creatures that are ideal for younger children
• Additional clusters for several narrom CHC abilities when combined with tests from the WJ III Tests of Cognitive Abilities
• Expanded measures of certain broad and narrow CHC abilities

The Diagnostic Supplement includes eleven new tests that increase the breadth and depth of coverage for several broad and narrow abilities defined by CHC theory. The following chart outlines the new tests along with the broad and narrow abilities measured:

TEST	BROAD ABILITY	NARROW ABILITY
Memory for Names	Long-Term Retrieval (Glr)	Associative Memory
Visual Closure	Visual-Spatial Thinking (Gv)	Closure Speed
Sound Patterns-Voice	Auditory Processing (Ga)	Sound Discrimination
Number Series	Fluid Reasoning (Gf)	Quantitative Reasoning
Number Matrices	Fluid Reasoning (Gf)	Quantitative Reasoning
Cross Out	Processing Speed (Gs)	Perceptual Speed
Memory for Sentences	Short-Term Memory (Gsm)	Auditory Memory Span
Block Rotation	Visual-Spatial Thinking (Gv)	Visualization
Sound Patterns-Music	Auditory Processing (Ga)	Sound Discrimination
Memory for Names-Delayed	Long-Term Retrieval (Glr)	Associative Memory
Bilingual Verbal Comprehension	Comprehension-Knowledge (Gc)	Lexical Knowledge & Language Development

More detailed Diagnostic Supplement information is available in an Adobe PDF file (224 KB). Sections include:

• Overview of the DS
• Relationship to the WJ III Tests of Cognitive Abilities
• Components of the DS
• Organization of the DS
• Purpose and Uses of the DS
• Further Diagnostic Capability Based on CHC Theory
• Assessment with Reduced Language Requirements
• Assessment of Bilingual Individuals
• Assessment of Young Children

TECHNICAL QUALITIES

The Diagnostic Supplement includes normative data from over 8,800 individuals in over 100 geographically diverse communities in the US that is representative of the US population from ages 2 - 90+, including college and university undergraduate and graduate students - the same norming sample from the Woodcock-Johnson III.

COMPONENTS

The Complete Diagnostic Supplement includes: Test Book, Audio Cassette, Examiner's Manual, Answer Guide, one package of Test Records, Compuscore software (WCPP Version 2.0).

The WJ III Audio CD contains the complete audio portions of the Woodcock-Johnson III and are ideal for test administrators who prefer to use a CD instead of a cassette. This CD offers a convenient way to administer portions of the WJ III Diagnostic Supplement that require audio recordings.

COMPONENTS	ISBN	PRICE (Cdn. $)
Diagnostic Supplement to the WJ III Tests of Cognitive Abilities	9-23658	$505.00
Test Records (Pkg. 25)	9-23678	$103.95
WJ III Audio CD for Diagnostic Supplement and Tests of Cognitive Abilities	9-23485	$39.80

Prices are in effect January 2, 2009.