Wechsler Test Score Interpretation and Report Writing 2 — Questions and Answers
Question 1: A WAIS-IV examinee earns a Full Scale IQ of 130. What percentile rank does this represent?
- 50th
- 84th
- 98th (Correct answer)
- 75th
Correct answer: 98th
An IQ of 130 is two standard deviations above the mean, corresponding to the 98th percentile.
Question 2: On the Wechsler scales, what is the standard deviation used for the index and Full Scale IQ scores?
- 10
- 15 (Correct answer)
- 16
- 20
Correct answer: 15
Wechsler composite scores have a mean of 100 and a standard deviation of 15.
Question 3: A subtest scaled score of 13 falls into which descriptive classification?
- Average
- Low Average
- High Average (Correct answer)
- Superior
Correct answer: High Average
Scaled scores of 13–15 are typically classified as High Average (one SD above the mean of 10).
Question 4: When index scores differ markedly from one another, what does this primarily suggest about the Full Scale IQ?
- It should be reported with more confidence
- It may not adequately summarize overall ability (Correct answer)
- It must be recalculated
- It indicates malingering
Correct answer: It may not adequately summarize overall ability
Large index discrepancies mean the Full Scale IQ may mask a scattered profile and should be interpreted cautiously.
Question 5: What does a 90% confidence interval around a Full Scale IQ communicate?
- The exact true score
- A range likely to contain the true score (Correct answer)
- The examinee's raw score range
- The reliability coefficient
Correct answer: A range likely to contain the true score
A confidence interval gives a band of scores within which the examinee's true score most likely falls.
Question 6: Which index measures verbal concept formation and acquired knowledge on the WAIS-IV?
- Working Memory Index
- Processing Speed Index
- Verbal Comprehension Index (Correct answer)
- Perceptual Reasoning Index
Correct answer: Verbal Comprehension Index
The Verbal Comprehension Index reflects verbal reasoning, concept formation, and acquired knowledge.
Question 7: In a report, why should raw scores generally NOT be presented as primary results to non-specialist readers?
- They are confidential
- They are meaningless without norm-based conversion (Correct answer)
- They are always inaccurate
- They violate copyright
Correct answer: They are meaningless without norm-based conversion
Raw scores have no interpretive meaning until converted to standardized scores using age-based norms.
Wechsler Test Score Interpretation and Report Writing 2
A WAIS-IV examinee earns a Full Scale IQ of 130.
What percentile rank does this represent?