Intelligence Testing Flashcards

1
Q

Purposes of Testing (2)

A

(1) Guidance: Cognitive strengths and weaknesses
(2) Decision-making: Diagnosis, entrance in academic programs, career decisions…

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2
Q

Types of Tests of General Mental Ability (2)

A

(1) Individual tests
(2) Group tests

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3
Q

Names of famous individual ability tests

A
  • Stanford Binet IQ Test
  • Wechsler IQ scales (e.g. WAIS-IV, WISC-V)
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4
Q

Names of famous group ability tests

A
  • Scholastic Tests: GRE, SAT
  • Aptitude Batteries
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5
Q

Francis Galton (3)

A
  • First to try to measure differences in intellectual capacities
  • Intellectual differences = differences in sensation and perception abilities
  • Human abilities have a normal distribution
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6
Q

Alfred Binet: Goal

A

Identifying children with special needs

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7
Q

Alfred Binet: Def of intelligence

A

Complex mental acts e.g., imagination, reasoning, memory, motor skills

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8
Q

Who made the first practical intelligence test

A

Alfred Binet

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9
Q

Alfre Binet’s tests - Identified tasks sensitive to: (3)

A
  • Age (Developed AGE NORMS that provided an age equivalent score)
  • School achievement
  • Teacher’s perceptions of ability
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10
Q

Alfre Binet’s tests - assess ability to: (3)

A
  • Judge well
  • Understand well
  • Reason well
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11
Q

Binet’s IntelligenceTests measure: ____ (7)

A
  • Measure higher mental processes
    • Memory
    • General knowledge
    • Abstract Reasoning
    • Attention
    • Comprehension
    • Coordination
    • Visual judgment
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12
Q

Binet’s IntelligenceTests Concepts: (4)

A
  • Introduced the concept of Mental Age
  • Developed age norms (provided an age-equivalent score)
  • Established cut-offs scores - 4 categories: idiot, imbecile, moron, normal
  • One score
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13
Q

Did Binet’s test work? (3)

A
  • Discriminated MR from “normal” children
  • Discriminated MR from behavior problems
  • Predicted grades
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14
Q

Binet’s test had a ____ score

A

single

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15
Q

Binet’s test was brought to US by ____: What modification did he bring? (3)

A

Lewis Terman (Stanford-Binet)
-> Intended to measure GENERAL intelligence
-> Introduced Intelligence Quotient Ratio (IQ)
- Individuals with higher IQs had greater career success (i.e. Terman study)

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16
Q

Lewis Terman: Intelligence Quotient Ratio (IQ) formula

A

IQ = Mental Age (MA)/ Chronological Age (CA) * 100

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17
Q

Criticism of Binet scale (3)

A
  1. Invalid for adults
  2. Tasks favoured speed, disadvantaging older adults
  3. Mental age norms did NOT apply to adults (While Wechsler highlighted the potential for intellectual decline with age)
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18
Q

David Wechsler’s novelties (4)

A
  • Content Grouping: Grouped tasks by content, creating tests that provided not just an overall score but also separate scores for each content area.
  • Historically provided 3 scores: IQ, VIQ, PIQ (in addition to subset scores)
  • Introduced the concept of deviation IQ: scores should have similar statistical properties and same meaning at diff ages
  • Introduced the Point scale: assigns specific points for each item passed
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19
Q

The Binet scale grouped items by ____, with tasks _____ to their content at each level.

A

age level, unrelated
=> Tasks covered various abilities with no specific point system for completed tasks (e.g., passing two out of four tasks in a set would yield no credit).

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20
Q

Evolution of Intelligence Quotient (IQ) (3)

A

(1) Binet: Mental age
(2) Terman’s IQ
(3) Wechsler’s Deviation IQ (-> Transformed standard score for specific age group)

21
Q

Problem with Terman’s IQ

A

Score did NOT represent the same relative position at one age as another
1. Maximum mental age = 18
2. Standard deviations at diff ages were different; consequently, meaning of scores was different at diff ages

22
Q

Wechsler Scales & their age range (3)

A

(1) Wechsler Preschool and Primary Scale of IntelligenceFourth Edition (WPPSI-IV): 2-7yo
(2) Wechsler Intelligence Scale for Children–Fifth Edition (WISC-V): 6-16yo
(3) Wechsler Adult Intelligence Scale–Third Edition (WAIS-IV): 16-90yo

23
Q

WISC–V Characteristics (3)

A
  • Individual administration
  • Assessment of Cognitive Functioning in Children 6-16 years
  • Administration time: 45-65 minutes
24
Q

WISC–V Content (2)

A
  • 5 index scores (made of subsets)
  • 10 primary subtests to obtain FSIQ (=total score, Full-Scale Intelligence Quotient)
25
Q

WISC’S Five Primary Index Scores

A
  • Verbal Comprehension Index (VCI)
  • Visual-Spatial Index (VSI)
  • Fluid Reasoning Index (FRI)
  • Working Memory Index (WMI)
  • Processing Speed Index (PSI)
26
Q

WISC: Verbal Comprehension Index (VCI)

A

Measures the ability to access and apply acquired knowledge;
i.e., the use of verbal concept formation, reasoning, and expression.

27
Q

WISC: Visual-Spatial Index (VSI)

A

Measure the ability to evaluate visual details and understand visual-spatial relationships to construct geometric designs from a model.

28
Q

WISC: Fluid Reasoning Index (FRI)

A

Measures the ability to DETECT important elements among visual objects, to understand the underlying conceptual RELATIONSHIP + ability to apply the knowledge to identify another object that best represents the concept.

29
Q

WISC: Working Memory Index (WMI) (3 components)

A

Measures verbal + visual working memory + the ability to resist proactive interference.
-> Working memory involves attention, concentration, mental control, and reasoning.

30
Q

WISC: Processing Speed Index (PSI)

A

Measuresthe student’s ability to quickly process nonverbal material,attention and visual-motor coordination.

31
Q

[WISC] Picture Concepts (FRI): Description & Index

A

In Fluid reasoning index:
-> Designed to measure abstract, fluid, and categorical reasoning ability
-> The child is presented with 2-3 rows of pictures and chooses one picture from each row to form a group with a common characteristic

32
Q

[WISC] Letter-Number Sequencing (WMI): Description & Index

A

In Working memory index
- Child is presented with a series of numbers and letters
- Child repeats numbers then letters in order
- “You say the numbers first in order, then the letters in alphabetical order.”
- Examiner says “7 K 3 D 9”
- Child responds “3 7 9 D K

33
Q

[WISC] Cancellation (PSI): Description & Index

A

In Processing speed index.
“Draw a line through each animal. Do not draw a line through anything else”

34
Q

Interpretation of WISC–V Scores: FSIQ, Index, Subset

A

Scores transformed into z-scores.
- FSIQ score: Mean = 100, SD = 15
- Index scores: Mean = 100, SD = 15
- Subset scaled scores: Mean = 10, SD = 3

35
Q

Norms WISC

A

Very good norms! Representative of the US
- Age
- Sex
- Race/Ethnicity
- Parent Education Level
- Geographic Region

36
Q

Reliability: WISC

A

Very high!
Internal consistency for FSQI and 5 indexes: .84 to .97
Test-retest for Indexes: .79 to .92
Inter-scorer reliability for subsets: .98 to .99

37
Q

Validity: WISC

A

Factor analysis -> 4 to 5 factor solution best
(Works with the number of indexes -> good!)

38
Q

Validity: FSIQ

A
  • Internal structure as predicted
  • Convergent validity: Good, correlated with WISC-III and Stanford-Binet
  • Criterion validity: Good, correlated with Wechsler FSIQs, academic achievement
39
Q

Spearman’s theory of intelligence (2)

A

(1) Two-Factor Theory
(2) 2 components:
-> General variance (cognition): g-factor
-> Specific variance (task-specific cognition): s-factor + error variance (e)

40
Q

Spearman’s two-factor theory: on what did he base his notion of “g”?

A

Based on the well-documented phenomenon that almost all kinds of intelligence tests are correlated with each other (called a “positive manifold”)

41
Q

Cattell-Horn theory of intelligence (3)

A

(1) Fluid intelligence (Gf) = problem-solving and information -> INdependent of experience
(2) Crystallized intelligence (Gc) = breadth and depth of general knowledge
(3) Other mental abilities: visualization processing, processing speed, and short-term memory

42
Q

John Carroll’s Theory of intelligence

A

Three-stratum theory.
- Stratum 3: General cognitive ability (g)
- Stratum 2: Broad ability factors (e.g. Quantitative knowledge, Comprehension knowledge, Reading and writing…)
- Stratum 1: Narrowly defined cognitive abilities
-> Supported by factor analytic research but also neurocognitive, genetic, and developmental research

43
Q

Is there a genetic contribution to IQ?

A

YES: substantial genetic contribution to the development of intelligence, BUT the pathway by which genetic differences are expressed is not known

44
Q

Do environmental factors contribute a lot to IQ?

A

YES: Environmental factors contribute significantly to the development of intelligence, BUT the mechanism by which they express their influence is unknown

45
Q

Does nutrition play a role in the development of intelligence?

A

UNCLEAR: Profound early malnutrition is detrimental BUT the effects of more subtle nutritional differences in populations that are “adequately fed” are not well understood.

46
Q

Is there a theoretical model accounting for the correlation between information-processing speed & intelligence

A

NO.
-> Yes, correlation between information-processing speed & intelligence
-> BUT: No theoretical model accounts for these correlations yet.

47
Q

Is the Flynn effect real?

A

YES: Mean IQs are increasing worldwide although the factors driving these gains are unknown.

48
Q

Can mean IQ differences between races be attributed to obvious test bias or differences in SES status?

A

NO, cannot be attributed to that.
-> There is also NO support for genetic explanations.
-> No one knows the basis of these differences.

49
Q

Do standard intelligence tests measure ALL aspects of intelligence?

A

NO.
They do NOT measure all aspects of intelligence such as creativity, common sense, and interpersonal finesse.
-> Not much is known about these abilities and how they relate to more traditional aspects of intelligence or how they develop.