Wechsler Test Wechsler Scoring and Normative Data 2 — Questions and Answers
Question 1: On the WAIS-IV, what is the mean of the Full Scale IQ (FSIQ) standard score?
- 50
- 100 (Correct answer)
- 10
- 500
Correct answer: 100
Wechsler Full Scale IQ scores use a mean of 100 and a standard deviation of 15.
Question 2: What is the standard deviation of the Wechsler FSIQ scale?
- 3
- 5
- 15 (Correct answer)
- 20
Correct answer: 15
The FSIQ and index scores have a standard deviation of 15.
Question 3: Wechsler individual subtest scaled scores have a mean of what value?
- 10 (Correct answer)
- 15
- 50
- 100
Correct answer: 10
Subtest scaled scores are set to a mean of 10 with a standard deviation of 3.
Question 4: What is the standard deviation of a Wechsler subtest scaled score?
- 1
- 3 (Correct answer)
- 10
- 15
Correct answer: 3
Scaled scores range mostly 1–19 with a mean of 10 and SD of 3.
Question 5: An FSIQ of 130 is how many standard deviations above the mean?
- One
- Two (Correct answer)
- Three
- Four
Correct answer: Two
130 minus 100 equals 30, and 30 divided by the SD of 15 equals two SDs.
Question 6: Approximately what percentage of people score within one standard deviation (85–115) of the mean FSIQ?
- About 34%
- About 50%
- About 68% (Correct answer)
- About 95%
Correct answer: About 68%
In a normal distribution roughly 68% of scores fall within one SD of the mean.
Question 7: A raw subtest score is converted to a scaled score primarily based on what?
- The examinee's age group norms (Correct answer)
- The examiner's clinical judgment
- A fixed conversion that ignores age
- The number of items administered
Correct answer: The examinee's age group norms
Raw scores are converted to scaled scores using age-based normative tables.
Wechsler Test Wechsler Scoring and Normative Data 2
On the WAIS-IV, what is the mean of the Full Scale IQ (FSIQ) standard score?