week 3 discusion
jhenan1
10_Cohen_Text_PPT_Chapter_10.pdf
McGraw-Hill/Irwin © 2013 McGraw-Hill Companies. All Rights Reserved.
Chapter 10
Tests of Intelligence
10-2
Tests of Intelligence
• The Stanford-Binet Intelligence Scales
– The first published intelligence test with clear
instructions on use
– The first test to introduce the concept of an
alternate item
– Ratio IQ: the ratio of the testtaker’s mental age
divided by his or her chronological age,
multiplied by 100 to eliminate decimals:
10-3
Tests of Intelligence
• The Stanford-Binet Intelligence Scales
– With the third edition of the Stanford-Binet, the
deviation IQ replaced the ratio IQ
• Deviation IQ: a comparison of the performance of
the individual with the performance of others in the
same age in the standardization sample
– With the fourth edition, a point scale was
implemented which organized subtests by
category of item rather than the age at which
most testtakers should be able to respond
correctly.
10-4
Tests of Intelligence
• The Stanford-Binet Intelligence Scales
– The fifth edition was designed for
administration to ages 2 – 85.
– The test yields a composite of scores, including
a Full Scale IQ, Abbreviated Battery score,
Verbal IQ score, and Nonverbal IQ score.
10-5
Stanford-Binet Intelligence Scale, Fifth Edition
10-6
Tests of Intelligence
• The Stanford-Binet Intelligence Scale, 5th Ed.
– The Stanford-Binet Full Scale score can be
converted into nominal categories designated
by cutoff boundaries for quick reference:
Measured IQ Range Category 145 – 160 Very gifted or highly advanced
130 – 144 Gifted or very advanced
120 – 129 Superior
110 – 119 High average
90 – 109 Average
80 – 89 Low average
70 – 79 Borderline impaired or delayed
55 – 69 Mildly impaired or delayed
40 – 54 Moderately impaired or delayed
10-7
Tests of Intelligence
• The Wechsler Tests
– A series of individually-administered
intelligence tests to assess the intellectual
abilities of people from preschool through
adulthood.
– Until recently, all Wechsler scales yielded
several possible composite scores, including a
Full Scale IQ (a measure of general
intelligence), a Verbal IQ, and a Performance
IQ.
10-8
Tests of Intelligence
• The Wechsler Adult Intelligence Scale, 4th Ed.
– Consists of subtests that are designated as either
“core” or “supplemental.”
• Core subtest: a subtest administered to
obtain a composite score
• Supplemental subtest: a subtest
administered to provide additional clinical
information or extend the number of
abilities/processes sampled
10-9
Tests of Intelligence
• The Wechsler Adult Intelligence Scale, 4th Ed.
– The WAIS-IV contains 10 core subtests (Block
Design, Similarities, Digit Span, Matrix
Reasoning, Vocabulary, Arithmetic, Symbol
Search, Visual Puzzles, Information, and
Coding) and five supplemental subtests (Letter-
Number Sequencing, Figure Weights,
Comprehension, Cancellation, and Picture
Completion).
10-10
Tests of Intelligence
• The Wechsler Intelligence Scale for Children, 4th Ed.
– The WISC-IV yields a measure of general
intellectual functioning (a Full Scale IQ) as well as
four index scores: a Verbal Comprehension Index,
a Perceptual Reasoning Index, a Working Memory
Index, and a Processing Speed Index
– It is also possible to derive up to seven process
scores
• Process score: an index designed to help
understand the way the testtaker processes
various kinds of information
10-11
Tests of Intelligence
• The Wechsler Preschool and Primary Scale of
Intelligence, 3rd Ed.
– The WPPSI was developed to assess children
and racial minorities.
– WPPSI-III includes several subtests, including
Matrix Reasoning, Symbol Search, Word
Reasoning, and Picture Concepts
10-12
10-13
Tests of Intelligence
• Short forms: a test that has been abbreviated in
length, typically to reduce the time needed for
administration, scoring, and interpretation
• Much debate surrounds the use of short forms and
many scholars suggest “finding the time” to
administer the long form of the intelligence test.
• Some suggest short forms be used only for
screening purposes, rather than to make placement
or educational decisions.
10-14
Other Tests of Intelligence
• Individual administration – Kaufman Adolescent and Adult Intelligence Test
(KAIT)
– Kaufman Brief Intelligence Test (K-BIT)
– Kaufman Assessment Battery for Children (K-ABC)
• Group administration – Army Alpha test
– Army Beta test
– School ability test
– California Test of Mental Maturity
– Kuhlmann-Anderson Intelligent Tests
– Henmon-Nelson Tests of Mental Ability
– Cognitive Abilities Tests
10-15
10-16
Measures of Cognitive Style and
Specific Intellectual Abilities • Cognitive style: a psychological dimension that
characterizes the consistency which one acquires
and processes information
– e.g., field dependence versus field
independence
• Measures of creativity
– Divergent thinking: a reasoning process in
which thought is free to move in many different
directions, making several solutions possible
– Tools tapping creativity include Consequences
and Unusual Uses
