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Question
A school counselor decides to examine all students' cognitive ability and achievement test scores in her school by using the CogAT and the Stanford Achievement Test. She then identifies all students who have significantly higher cognitive ability than achievement scores. Which of the following is NOT likely a source of these differences?a. Learning disabilities
b. Problems at home
c. Problems at school
d. Motivational problems
e. Poor reliability and validity of the instruments
Answer
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