1. Technical Adequacy
The Woodcock-Johnson Fourth Edition Cognitive Abilities (WJIV COG) Assessment measures seven broad abilities related to cognitive functioning. The subtests are divided into three main composites: General Intellectual Ability, Brief Intellectual Ability, and Gf-Gc composite.
The creators of this tool have taken great care to ensure its reliability and validity.
Reliability
Validity
Reliability refers to the extent to which a test measures consistently and without error. A test is considered reliable if it is consistent within itself and across time.
- WJIV COG studied for several types of reliability.
- Internal consistency appears adequate for all subtest and cluster scores.
Validity refers to the degree to which a test measures what it claims to measure. Validity is necessary for a test to be useful for its intended purpose.
- Special efforts made to provide all types of validity evidence related to
- proposed uses
- interpretations of scores
2. Bias Status
- Co-normed with WJIV ACH & WJIV OL
Woodcock-Johnson IV Tests of Achievement & Woodcock-Johnson Tests of Oral Language
- National standardization sample
More than 7,000 people From 2 years old to over 90 years old Undergraduate & Graduate college and university students Demographic closely mirrored to overall U.S. population
Analyze norm items for any sex, race, ethnicity bias
In most cases, items showing any bias were removed
3. Purpose of the Test
The Woodcock-Johnson Cognitive Abilities Assessment is designed to measure cognitive abilities and intellectual level
- Assesses general intellectual capacity, providing an estimate of intellectual functioning, similar to an overall IQ score
- Tests generate predictions regarding academic performance in various subjects like reading, math, oral and written language, and academic knowledge
serves multiple purposes
Assess and define an individual's strengths and weaknesses
Plan individual education programs
Offer valuable information to assist in classification and diagnosis
Determine the nature and severity of any impairments
WJIV COG
Naoma Karageorge
Created on September 6, 2023
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Transcript
1. Technical Adequacy
The Woodcock-Johnson Fourth Edition Cognitive Abilities (WJIV COG) Assessment measures seven broad abilities related to cognitive functioning. The subtests are divided into three main composites: General Intellectual Ability, Brief Intellectual Ability, and Gf-Gc composite.
The creators of this tool have taken great care to ensure its reliability and validity.
Reliability
Validity
Reliability refers to the extent to which a test measures consistently and without error. A test is considered reliable if it is consistent within itself and across time.
Validity refers to the degree to which a test measures what it claims to measure. Validity is necessary for a test to be useful for its intended purpose.
2. Bias Status
Woodcock-Johnson IV Tests of Achievement & Woodcock-Johnson Tests of Oral Language
More than 7,000 people From 2 years old to over 90 years old Undergraduate & Graduate college and university students Demographic closely mirrored to overall U.S. population
Analyze norm items for any sex, race, ethnicity bias
In most cases, items showing any bias were removed
3. Purpose of the Test
The Woodcock-Johnson Cognitive Abilities Assessment is designed to measure cognitive abilities and intellectual level
serves multiple purposes
Assess and define an individual's strengths and weaknesses
Plan individual education programs
Offer valuable information to assist in classification and diagnosis
Determine the nature and severity of any impairments