W7 - intelligence testing Flashcards

1
Q

Lay definitions of intelligence

A
  • reasons logically and well
  • reads widely
  • common sense
  • open-minded
  • writes without difficulty
  • sensitive towards others need and desires
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2
Q

Common factors in lay intelligence definitions

A
  • problem solving
  • verbal ability
  • social competence

Differences to experts:

  • motivation and narrower (experts)
  • interpersonal aspects and broader (lay)
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3
Q

Intelligence in children

A
  • younger children tended to emphasize interpersonal skills, eg., being nice, helpful and polite
  • older children emphasized academic skills eg., reading, doing well in class
  • > developmental progression in understanding of intelligence differs from adults
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4
Q

Intelligence cross-culturally

A
  • different values constitute different views of what intelligence consists of
  • greater emphasis on social aspects of intelligence in both African and Asian cultures compared to Western
  • > adults in Zambia
  • > social responsibilities, cooperativeness and obedience
  • > intelligent children expected to be respectful to adults
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5
Q

Francis Galton (1883) intelligence

A

more intelligent = higher sensory abilities

  • advocated for tests of visual acuity or hearing ability as measure of intelligence
  • > subsequent research notes a small but positive correlation between sensory acuity and intelligence scores
  • Galton developed many sensorimotor and perception related tests by which he attempted to measure his definition of intelligence
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6
Q

Alfred Binet (1895) intelligence

A

did not define explicitly but described various components of intelligence, including reasoning, judgement, memory and abstraction

  • criticised Galton’s approach and called for more complex measurements
  • viewed intelligence as inseparable abilities that required complex measurements to determine
  • kickstarted modern intelligence measurement
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7
Q

Charles Spearman (1904, 1927)

A

believed that across all of the various specific cognitive tasks that were used in intelligence tests there was a substantial overlap

g

*look up image

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8
Q

David Wechsler (1958)

A

“the aggregate capacity of the individual to act purposefully, to think rationally and to deal effectively with his environment. It is composed of elements or abilities which are qualitatively differentiable”

  • advocated measuring two qualitatively differentiable abilities which were verbal or performance based in nature
  • Wechsler scales still in use today
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9
Q

Jean Piaget (1954, 1971)

A

focused his research on the development of cognitive abilities in children (how they think, understand themselves and the world). Piaget believed many of these were cultivated through play and engagement with others

Four stages of cognitive development

  • sensorimotor
  • preoperational
  • concrete operational
  • formal operational
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10
Q

Howard Gardner (1983, 1994)

A

Argued that traditional IQ tests were limited and only covered a subset of human intelligence. Citing lay definitions emphasizing social competence, emotional insight and socially valued human abilities such as musical, artistic expression

8 types of intelligence

  • logical-mathematical and linguistic
  • spatial and bodily kinaesthetic
  • musical and naturalistic
  • interpersonal and intrapersonal
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11
Q

Thurstone’s Primary Mental Abilities PMA (1931)

A
  • concluded that several factors (not a single g) could best explain empirical results
  • proposed approximately a dozen factors
  • > verbal comprehension, world fluency, number, space, associative memory, perceptual speed, inductive reasoning
  • developed a test (PMAT) to assess each of these factors - however acknowledged the inter-relationships between subtests
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12
Q

Fluid and crystallised intelligence - Horn and Cattell

A

Fluid intelligence: largely non-verbal and culture reduced form of mental efficiency

  • > related to a person’s inherent capacity to learn and problem solve
  • > used when a person needs to adapt to a new situation

Crystallised intelligence: highly culturally dependent and used for tasks that require a learned response

  • > acquired skills and knowledge
  • > related to education (both formal and informal), more ‘learned experience’
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13
Q

Cattell (1941-1965)

A

Spearman’s g reflected by Gf and Gc which symbolise fluid and crystallised intelligence, overarching sub categories

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14
Q

Cattell and Horn (1940-1970) extended theory

A
“Gf” 	– fluid intelligence
“Gq” 	– quantitative knowledge
“Gc” 	– crystallised intelligence
“Grw” 	– reading and writing ability
“Gsm” 	– short-term memory
“Gv” 	– visual processing
“Ga” 	– auditory processing
“Glr” 	– long-term retrieval
“Gs” 	– processing speed
“CDS” 	– correct decision speed
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15
Q

Gardner’s theory of multiple intelligences 1983

A
linguistic = word smart
logical mathematical = logic smart
naturalist = nature smart
spatial = picture smart
bodily kinaesthetic = body smart
musical = music smart
interpersonal = people smart
intrapersonal = self smart
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16
Q

Carroll’s 3 stratum theory of cognitive abilities 1993

A
  • John Carroll reviewed all of the factor analytic research since SApearman
  • > reanalysed > 460 data sets (1500 references)
  • revised Cattell and Horn model to hierarchal 3-strata model
  • inclusion of g as over-arching factor
  • look up image
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17
Q

CHC theory of intelligence

A
  • integrated model of Cattell-Horn and Carroll models

- features 10 “broad stratum” abilities and over 70 “narrow stratum” abilities

18
Q

Information processing view

A
  • focuses on how not what
  • two types of processing
  • > simultaneous / parallel
  • > successive / sequential

PASS model
- planning, attention, simultaneous and successive

19
Q

Emotional intelligence

A

Daniel Goleman - ability to identify, assess and manage emotions of self and others

  • developed in context of “multiple intelligences”
  • widely researched, much interest
  • look up image
20
Q

Criteria for selection of intelligence tests

A
  • The theory (if any) on which a test is based
  • Ease of administration (group, single), scoring, and interpretation
  • Adequacy and appropriateness of norms (are they dated, non-representative)
  • Reliability and validity indices
  • Utility
  • Availability of localized versions (e.g. for Australian, rather than American English)
21
Q

Binet-Simon intelligence Scale

A

Binet-Simon Intelligence Scale- first practical intelligence scale
Scored by identifying what 75% of an age group could answer.
30 individual tasks
- Easy- name various body parts
- More difficult- how are a rabbit and a bird different?
- Construct a sentence from words
- Remember digits
- Draw a design from memory (below)

22
Q

Stanford-Binet intelligence scales

A

The Stanford-Binet Intelligence Scales, the first published intelligence test with

  • clear instructions on use
  • clear instructions on scoring
  • alternate item
  • Not perfect however

IQ scores = (mental age / chronological age) * 100

23
Q

Third edition Binet scale changes

A

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 standardisation sample (age group)

Later become known as a test composite, derived from mathematical translation of one or more subtests.

24
Q

Stanford-Binet 5 (SB5)

A
  • The fifth edition was designed for administration from ages 2 to 85
  • Upward extension to test adults over time

The test yields a number of composite scores, including a Full Scale IQ, an Abbreviated Battery IQ score, a Verbal IQ score, and a Nonverbal IQ score

Based on the Cattell-Horn-Carroll (CHC) model
*look up image

25
Q

Routing test in SB5

A

Designed to guide to the “optimum level” of difficulty.
- Floor level – lowest level

  • Ceiling level – highest level
  • Basal/base level: the minimum criteria to continue administering testing

Example – continue testing as long as examinee answers two consecutive items correctly. Discontinue once two errors in a row.

26
Q

Descriptive labels in SB5

A
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
27
Q

Wechsler tests

A

Wechsler was dissatisfied with Stanford-Binet (originally designed for children),

  • Wechsler-Bellevue 1 (1939)
  • Wechsler-Bellevue 2 (1942) – not standardised
  • Wechsler Adult Intelligence Scale (WAIS)
  • > age range 16+ yrs

Downward extensions of WAIS due to popularity to allow assessment of children

  • Wechsler Intelligence Scale for Children (WISC)~ age range ~ 7-16 yrs
  • Wechsler Pre-school/Primary Scale Intelligence (WPPSI) ~ age range 3-7 yrs
  • Earlier versions very similar
28
Q

Wechsler testing overview

A

Individually administered:

(a) assess different aspects of ability
(b) give opportunity to view personality, motivation, and other variables

Work under the premise that:

  • Intelligence is both global and specific
  • Aspects of intelligence cluster into higher-order cognitive ability domains (Verbal and Performance)
  • Subtests are different measures of intelligence, not measures of different kinds of intelligence
  • > Until recently, all Wechsler scales yielded a Full Scale IQ (a measure of general intelligence), a Verbal IQ, and a Performance IQ
  • > Recent revisions greater informed by CHC and factor analysis
29
Q

WAIS-III (1997) structure

A
organisation identified via factor analyses
(a) “g” factor
(b) verbal and performance factors
(c) four indices (factors)
. verbal comprehension
. working memory
. perceptual organisation
. processing speed
(d) 14 subtests (2-3 per factor/index)
*look up image
30
Q

WAIS-IV (2008) substantial changes

A
Better reflects CHC model and its revisions
Four factors now: 
- Verbal Comprehension,
- Working Memory, 
- Perceptual Reasoning and
- Processing Speed.
  • > Drops Verbal IQ and Performance IQ composites (but still used for GAI)
  • > Working Memory and Processing Speed composite (Cognitive Proficiency Index CPI)
31
Q

WAIS-IV structure

A

-> Introduces concept of core and supplemental tests
Core subtest: a subtest administered to obtain a composite score
- Block Design, Similarities, Digit Span, Matrix Reasoning, Vocabulary, Arithmetic, Symbol Search, Visual Puzzles, Information, and Coding

Supplemental (optional) subtest: a subtest administered to provide additional clinical information or extend the number of abilities/processes sampled

  • Letter-Number Sequencing, Figure Weights (balancing scales), Comprehension, Cancellation, and Picture Completion
  • look up image
32
Q

Scoring and norms - key terms

A
Scaled scores
Composite scores
Standardized score
T-score
Percentile
Descriptor
33
Q

Scaled scores

A

(M = 10, SD = 3)
age standardised score on subtests (e.g., WISC)
problematic

34
Q

Composite scores

A

(M = 100, SD = 15)

age standardised score on composites and FSIQ

35
Q

Standardized scores

A

(z-score) = mean / SD

36
Q

T scores

A

( M = 50, SD = 10 )

37
Q

Percentiles

A

ranks equal to or better than this percentage of scores in the normative sample (e.g. 80th percentile)

38
Q

Descriptor

A

verbal description of performance (e.g. Average, low average)

39
Q

Issues in intelligence testing

A
  • heredity and environmental contributions
  • gender differences
  • racial differences
  • culture and culture-free tests
  • stability across lifespan
40
Q

Stability of intelligence across lifespan

A

Adults: relatively stable

  • stability in measured intelligence over time in veterans (Gold et al. 1995)
  • verbal intellectual skills tended to be highly stable over time; (Invnik et al. 1995)
  • newly learned information was much less stable (Invnik et al. 1995)

Young adult intelligence was found to be the most important determinant of cognitive performance as an older adult.
-> 75+ decline in cognitive ability

41
Q

Flynn effect

A

The progressive rise in intelligence test scores in the population that is expected to occur on a normed intelligence test from when the test was first normed

This effect appears to be global across most countries (developed, and developing), may be related to increases is nutrition, health, and education

Implication: norms become out of date, requiring revision