Wechsler Test Score Interpretation and Report Writing 2

Question 1

A WAIS-IV examinee earns a Full Scale IQ of 130. What percentile rank does this represent?

Accepted Answer

98th

Answer

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?

Accepted Answer

15

Answer

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?

Accepted Answer

High Average

Answer

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?

Accepted Answer

It may not adequately summarize overall ability

Answer

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?

Accepted Answer

A range likely to contain the true score

Answer

A confidence interval gives a band of scores within which the examinee's true score most likely falls.

Wechsler Test Practice Test