WISC-IV (2003)
(2-3-15)
David Wechsler's view of intelligence
"The global capacity of a person to act purposefully, to think rationally, and to deal effectively with his/her environment." (1939, p. 229)
Full Scale IQ
Verbal IQ
Performance IQ
Wechsler intelligence tests
adult intelligence tests
W-B Wechsler-Bellview 1939
WAIS Wechsler Adult Intelligence Scale 1955
WAIS-R Wechsler Adult Intelligence Scale-Revised 1981
WAIS-III Wechsler Adult Intelligence Scale, Third Edition 1997
WAIS-IV Wechsler Adult Intelligence Scale, Fourth Edition (2008)
children's intelligence tests
WISC Wechsler Intelligence Scale for Children 1949
WISC-R Wechsler Intelligence Scale for Children-Revised 1974
WISC-III Wechsler Intelligence Scale for Children, Third Edition 1991
WISC-IV Wechsler Intelligence Scale for Children, Fourth Edition 2003
preschool children's intelligence tests
WPPSI Wechsler Primary and Preschool Scale of Intelligence (1967)
WPPSI-R Wechsler Primary and Preschool Scale of Intelligence-Revised (1989)
WPPSI-III Wechsler Primary and Preschool Scale of Intelligence, Third Edition (2002)
WISC-IV conceptual model:
Verbal Conceptual Index
Similarities
Vocabulary
Comprehension
(Information)
(Word Reasoning)
Perceptual Reasoning Index
Block Design
Picture Concepts
Matrix Reasoning
(Picture Completion)
Working Memory Index
Digit Span
Letter-Number Sequencing
(Arithmetic)
Processing Speed Index
Coding
Symbol Search
(Cancellation)
Each subtest yield a standard score (mean = 10, s.d. = 3) based on age norms
An Index Score (mean = 100, s.d. = 15) is generated for each of the four factor areas
A FULL SCALE IQ (FSIQ) is generated based on 10 subtests (3 VCI, 3PRI, 2 WMI, 2 PSI)
Standard Score (mean = 100, s.d. = 15)
The is a change from the traditional Wechsler model of intelligence: VIQ (Verbal IQ), PIQ (Performance IQ), and composite FSIQ
WISC-V conceptual model: new factor model
Verbal Conmprehension Index
Similarities
Vocabulary
Visual Spatial Index
Block Design
Visual PuzzlesFluid Reasoning Index
Matrix Reasoning
Figure Weights
Working Memory Index
Digit Span
Picture Span
Processing Speed Index
Coding
Symbol Search
Each subtest yield a standard score (mean = 10, s.d. = 3) based on age norms
An Index Score (mean = 100, s.d. = 15) is generated for each of the four factor areas
A FULL SCALE IQ (FSIQ) is generated based on 10 subtests (2 VCI, 2 VS, 2 FR, 2 WM, 2 PS)
Standard Score (mean = 100, s.d. = 15)