Chapter 10: Wechsler Intelligence Scales Flashcards
- What factors did Wechsler focus on that those before him had not?
Incorporated nonverbal intelligence and non-intellective (Anxiety, Distractions, Inattention, etc.)
- What were some criticisms of the Binet scale by Wechsler?
- Didn’t consider that cognitive skills decline with age
- Speed/timed portions
- Didn’t like that a single score represented someone’s intelligence
- What is the age range of the Wechsler scales?
WPPSI-II: 2:6 - 7:3
WISC for kids: 6-16
WAIS for adults: 16-99
- Why is the inclusion of a point scale a significant improvement? What did a performance scale add?
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.
- Be able to know and differentiate the major functions measured by each subtest of the WAIS-IV
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
- What are the mean, standard deviation, and range for scaled scores, standard scores, and index scores?
- Scaled subtest: Mean = 10, SD = 3
- Total test/standard scores: Mean = 100, SD = 15
- How are the IQ scores calculated?
Sum of the subtests
- Name the index scores and what the purpose of each index is.
- 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)
- What is pattern analysis? What are the concerns when using such a method?
- 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
- What is a hold subtest?
a test that is not sensitive to cerebral damage
- Which subtests are most sensitive to cerebral dysfunction? Which are considered “hold” subtests?
Block design, matrix reasoing, visual puzzles (MOST SENSITIVE TO CEREBRAL DYSFUNCTION)
Vocabulary (MOST STABLE, “HOLD TEST”)
- How would you differentiate the WAIS-IV subtests that measure crystallized intelligence from those that measure fluid intelligence?
The degree of abstractness (ex: crystalized intelligence is not incredibly abstract)
