Wechsler Test Wechsler Psychometric Properties 3 — Questions and Answers
Question 1: Which validity concept refers to whether a Wechsler subtest actually measures the underlying construct, such as working memory, it claims to assess?
- Construct validity (Correct answer)
- Face validity
- Predictive validity
- Ecological validity
Correct answer: Construct validity
Construct validity addresses whether a test measures the theoretical trait it is intended to measure.
Question 2: Factor analysis of the WISC-V supports how many primary index scores?
- Three
- Four
- Five (Correct answer)
- Seven
Correct answer: Five
The WISC-V is organized around five primary index scores: Verbal Comprehension, Visual Spatial, Fluid Reasoning, Working Memory, and Processing Speed.
Question 3: Which index score was newly separated out in the WISC-V compared to the WISC-IV's Perceptual Reasoning Index?
- Processing Speed Index
- Working Memory Index
- Fluid Reasoning Index (Correct answer)
- Verbal Comprehension Index
Correct answer: Fluid Reasoning Index
The WISC-V split perceptual reasoning into separate Visual Spatial and Fluid Reasoning indexes.
Question 4: A test that produces consistent scores but does not measure what it intends to measure is best described as:
- Valid but not reliable
- Reliable but not valid (Correct answer)
- Both reliable and valid
- Neither reliable nor valid
Correct answer: Reliable but not valid
Consistency without accuracy means the test is reliable but not valid.
Question 5: The process of administering a Wechsler test to a large representative sample to establish norms is called:
- Validation
- Standardization (Correct answer)
- Calibration
- Equating
Correct answer: Standardization
Standardization establishes uniform administration procedures and normative reference data using a representative sample.
Question 6: Why are raw scores on Wechsler subtests converted to scaled scores before interpretation?
- To increase test length
- To adjust for the examinee's age group (Correct answer)
- To eliminate reliability
- To remove the need for norms
Correct answer: To adjust for the examinee's age group
Raw scores are converted to age-based scaled scores so performance can be compared to same-age peers.
Question 7: Which coefficient is commonly reported as a measure of a Wechsler subtest's internal consistency reliability?
- Cohen's kappa
- Cronbach's alpha (Correct answer)
- Pearson's d
- Spearman's rho only
Correct answer: Cronbach's alpha
Cronbach's alpha is widely used to estimate internal consistency reliability.
Wechsler Test Wechsler Psychometric Properties 3
Which validity concept refers to whether a Wechsler subtest actually measures the underlying construct, such as working memory, it claims to assess?