Chapter 10: Wechsler Intelligence Scales Flashcards

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1
Q
  1. What factors did Wechsler focus on that those before him had not?
A

Incorporated nonverbal intelligence and non-intellective (Anxiety, Distractions, Inattention, etc.)

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2
Q
  1. What were some criticisms of the Binet scale by Wechsler?
A
  • Didn’t consider that cognitive skills decline with age
  • Speed/timed portions
  • Didn’t like that a single score represented someone’s intelligence
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3
Q
  1. What is the age range of the Wechsler scales?
A

WPPSI-II: 2:6 - 7:3
WISC for kids: 6-16
WAIS for adults: 16-99

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4
Q
  1. Why is the inclusion of a point scale a significant improvement? What did a performance scale add?
A

Point scale: allows items of similar content to be grouped together (allows for subscales)

Performance scale: adds measures based on doing something, such as assembling a block puzzle, rather than only answering questions. Creates a more complete view of intelligence.

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5
Q
  1. Be able to know and differentiate the major functions measured by each subtest of the WAIS-IV
A

Verbal comprehension index (VCI)
- Vocabulary (MOST STABLE, “HOLD TEST”)
- Similarities
- Information

Perceptual Reasoning index (PRI)
- Block design (MOST SENSITIVE TO CEREBRAL DYSFUNCTION)
- Matrix reasoning
- Visual puzzles

Working Memory Index (WMI)
- Arithmetic
- Digit span
- Letter-number sequencing

Processing speed index (PSI)
- Digit symbol coding
- Symbol speech
You search for symbols

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6
Q
  1. What are the mean, standard deviation, and range for scaled scores, standard scores, and index scores?
A
  • Scaled subtest: Mean = 10, SD = 3
  • Total test/standard scores: Mean = 100, SD = 15
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7
Q
  1. How are the IQ scores calculated?
A

Sum of the subtests

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8
Q
  1. Name the index scores and what the purpose of each index is.
A
  • Verbal comprehension (acquired knowledge and verbal reasoning, crystalized intelligence
  • Perceptual reason (measure of fluid intelligence)
  • Working Memory (Information that we actively hold in our minds, not stored knowledge)
  • Processing Speed (how quick our brain processes information)
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9
Q
  1. What is pattern analysis? What are the concerns when using such a method?
A
  • Evaluating relatively large differences between different subtest scores
  • Uses large patterns to make diagnoses (THIS IS NOT GOOD)
  • It is inconclusive, contradictory, and doesn’t account for individual variability. Bad science
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10
Q
  1. What is a hold subtest?
A

a test that is not sensitive to cerebral damage

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11
Q
  1. Which subtests are most sensitive to cerebral dysfunction? Which are considered “hold” subtests?
A

Block design, matrix reasoing, visual puzzles (MOST SENSITIVE TO CEREBRAL DYSFUNCTION)

Vocabulary (MOST STABLE, “HOLD TEST”)

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12
Q
  1. How would you differentiate the WAIS-IV subtests that measure crystallized intelligence from those that measure fluid intelligence?
A

The degree of abstractness (ex: crystalized intelligence is not incredibly abstract)

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