If Shane earns a full-scale IQ of 90 on the WAIS-IV,this means that
A) ninety percent of the testtakers in Shane's age group scored lower than Shane on this test.
B) Shane correctly answered 90 questions.
C) Shane correctly answered 90% of the questions.
D) Shane scored at the low end of the average range.

Question

Quizplus · Accepted Answer

A full-scale IQ score of 90 on the WAIS-IV places Shane in the low end of the average range. A score of 90 corresponds to the 25th percentile, meaning that 75% of test-takers in Shane's age group scored higher than him. Option A is incorrect because 90 is not a percentage, but rather a standard score. Option B is incorrect because the WAIS-IV does not have a fixed number of questions, and the score is not based solely on the number of questions answered correctly. Option C is also incorrect because IQ scores are not percentages.

If Shane Earns a Full-Scale IQ of 90 on the WAIS-IV,this