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day; when they are ready; my grandchildren will have the curiosity to ask their grandmother 
questions about the time when the world was turned upside down。 So that if it starts tilting again; 
they and million of others can redress it before it is too late” (p。 9)。 

163 


CHAPTER 10 
Intelligence and Intelligence Assessment 

LEARNING OBJECTIVES 

On pletion of this chapter; students should be able to: 

1。 Describe both the original purposes of psychological assessment and the purposes for 
which it is monly used today 
2。 Identify the methods used to assess individual differences in practice 
3。 Define reliability and validity 
4。 pare and contrast the major theories of individual differences 
5。 Define the construct of intelligence 
6。 Describe Binet’s approach to intelligence testing 
7。 municate what is meant by the “politics of intelligence” 
8。 Identify objective and projective intelligence tests 
9。 Explain the differences between intelligence tests that are theory based and those that are 
empirically based 
CHAPTER OUTLINE 

I。 What Is Assessment? 
A。 Psychological Assessment is the use of specified testing procedures to evaluate the abilities; 
behaviors; and personal qualities of people 
B。 History of Assessment 
1。 Methods used in China in the 1800s were observed by missionaries 
and later brought to England 
2。 Sir Francis Galton was a central figure in the development Western 
intelligence testing 
a) Tried to apply Darwinian evolutionary theory to the study of 
human abilities 

b) Postulated four ideas regarding intelligence assessment 

(i) Differences in intelligence were quantifiable 
(ii) Differences between individuals formed a normal 
distribution 
(iii) Intelligence could be measured objectively 
(iv) The extent to which two sets of test scores were 
related could be statistically determined by a 
procedure he called co…relation; later to bee 
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CHAPTER 10: INTELLIGENCE AND INTELLIGENCE ASSESSMENT 

correlation 

c) Galton began the eugenics movement; advocation of improving 
humankind by selective inbreeding while discouraging 
reproduction among the biologically inferior 

C。 Basic Features of Formal Assessment 
1。 Formal assessment procedures should meet three requirements: 
a) Reliability: Instruments must be trusted to give consistent 
scores 

b) Validity: Instruments must measure what the assessor intends 
it to measure 

c) Standardization: Instruments must be administered to all 
persons in the same way under the same conditions 

2。 Methods of obtaining reliability; validity; and standardization: 
a) Reliability 
(i) Test…retest reliability 
(ii) Parallel forms 
(iii) Internal consistency 
Split…half reliability 
b) Validity 

(i) Face validity 
(ii) Criterion validity; or predictive validity 
(iii) Construct validity 
3。 Norms and Standardization 
a) Norms are typical scores or statistics 
b) Standardization is the administration of a testing device to all 
II。Intelligence Assessment 
A。 Intelligence is a very general mental capability that; among other things; involves the 
ability to reason; plan; solve problems; think abstractly; prehend plex ideas; learn 
quickly; and learn from experience 
B。 Origins of Intelligence Testing 
1。 Alfred Binet developed an objective test that could classify and 
separate developmentally disabled children from normal 
schoolchildren 
a) Designed age…appropriate test items 

b) puted average scores for normal children at different ages 
expressed in mental age and chronological age 

2。 Features of Binet’s approach 
a) Scores interpreted as an estimate of current performance; not 
as a measure of innate intelligence 

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PSYCHOLOGY AND LIFE 

b) Wanted scores to identify children needing special help; not 
to stigmatize them 

c) Emphasized training and opportunity 

d) Constructed his test on empirical; rather than theoretical; data 

C。 IQ Tests 
1。 The Stanford…Binet Intelligence Scale 
a) Adapted for American schoolchildren by Lewis Terman of 
Stanford University。 

b) Provided a base for the concept of intelligence quotient (IQ); 
with “IQ being the ratio of mental age (MA) to chronological 
age (CA); multiplied by 100” (in order to eliminate decimals) 

c) IQ = MA 。 CA ′ 100 

d) Revised in 1937; 1960; 1972; and 1986 

2。 The Wechsler Intelligence Scales 
a) Wechsler—Bellevue Intelligence Scale developed by David 
Wechsler and first published in 1939 

b) Renamed the Wechsler Adult Intelligence Scale (WAIS) in 
1955 and revised and re…released in 1981 (WAIS…R) 

c) WAIS…R is designed for individuals 18 years of age and older; 
and has six verbal and five performance subtests: 

(i) Verbal 
(a) Information 
(b) Vocabulary 
(e) prehension 
(d) Arithmetic 
(e) Similarities 
(f) Digit span 
(ii) Performance 
(a) Block design 
(b) Digit symbol 
(c) Picture arrangement 
(d) Picture pletion 
(e) Object assembly 
d) Wechsler Intelligence Scale for Children; 3rd Ed。 (WISC…III) (1991) 
designed for children ages 6 to 17 years 

e) Wechsler Preschool and Primary Scale of Intelligence; Revised 
(WPPSI…R) (1989) designed for children ages 4 to 6。5 years 

III。 Theories of Intelligence 
A。 Psychometric Theories of Intelligence 
1。 The most monly used statistical technique is factor analysis 
2。 The goal of factor analysis is to identify the basic psychological 
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CHAPTER 10: INTELLIGENCE AND INTELLIGENCE ASSESSMENT 

dimensions of the concept being investigated 

3。 Individual contributors 
a) Charles Spearman concluded presence of “g;” a general 
intelligence underlying all intelligent performance 

b) Raymond Cattell determined general intelligence could be 
broken into two relatively independent ponents 

(i) Crystallized intelligence; the knowledge the 
individual has already acquired and the ability to 
access that knowledge 
(ii) Fluid intelligence; the ability to see plex 
relationships and solve problems 
c) J。 P。 Guilford developed the structure of intellect model 
specifying three features of intellectual tasks: 

(i) Content; or type of information 
(ii) Product; or form in which information is presented 
(iii) Operation; or type of mental activity performed 
B。 Sternberg’s Triarchic Theory of Intelligence 
1。 Stresses importance of cognitive processes in problem solving 
2。 Three types of intelligence represent different ways of characterizing 
effective performance 
a) ponential intelligence is defined by the ponent or 
mental processes that underlie thinking and problem solving 

b) Experiential intelligence captures people’s ability to deal with 
two extremes: novel vs。 very routine problems 

c) Contextual intelligence is reflected in the practical management 
of day…to…day affairs 

C。 Gardner’s Multiple Intelligences and Emotional Intelligence 
1。 Theory expands the definition of intelligence beyond skills covered on 
an IQ test 
2。 Gardner identifies numerous intelligences; covering a range of human 
experience 
a) Linguistic intelligence 
b) Logical…mathematical ability 
c) Naturalist 
d) Spatial ability 
e) Musical ability 
f) Bodily Kinesthetic ability 
g) Interpersonal ability 
h) Intrapersonal ability 

3。 Emotional Intelligence (EQ) is related to Gardner’s interpersonal and 
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PSYCHOLOGY AND LIFE 

intrapersonal intelligences。 EQ has four parts: 
a) The ability to perceive; appraise; and express emotions 

accurately and appropriately 
b) The ability to use emotions to facilitate thinking 
c) The ability to understand and analyze emotions and to use 

emotional knowledge effectively 
d) The ability to regulate one’s emotions to promote both 
emotional and intellectual growth 

IV。 The Politics of Intelligence 
A。 History of Group parisons 
1。 Henry Goddard (early 1900s) advocated testing of immigrants and 
selectively excluding those found to be “mentally defective” 
2。 “Evidence” for exclusion derived from case studies of two families; the 
Juke and the Kallikak families; that allegedly had produced defective 
human offspring for generations 
B。 Heredity and IQ 
1。 Heritability is based on an estimate within a given group; but cannot 
be used to interpret between group differences 
2。 A heritability estimate of a particular trait; such as intelligence; is based 
on the proportion of the variability in test scores on that trait that can 
be traced to genetic factors 
3。 For human characteristics in general; differences between gene pools 
of different racial groups are minute; as pared to genetic 
differences among individual members of the same group 
C。 Environments and IQ 
1。 Research has most often focused on global measures of environment; 
such as the influence of socioeconomic status on IQ 
2。 “Head Start” taught us that: 
a) IQ can easily be affected by the environment 
b) An enriched environment must be sustained if the results are 
to last 

D。 Culture and the Validity of IQ Tests 
1。 Systematic bias makes some tests invalid and unfair for minorities 
2。 Ongoing concern exists as to whether it is possible to devise an IQ test 
that is “culture…fa

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