From the textbook research design By ALAN E. Kazdin: Question 1 Final course grades, standardized math tests, and IQ scores were used to measure student learning in a high school math class. There was high correlation between the test scores and course grades, and there was moderate correlation between IQ score and final course grades. It can be concluded that ________. a. IQ as a measure of math learning has the lowest construct validity b. IQ as a measure of math learning has the highest construct validity c. IQ as a measure of math learning has high discriminant validity with course grades d. IQ as a measure of math learning has incremental validity in assessing learning in math Question 2 What is a problem with using global ratings? a. There are too many numbers to deal with b. The measure is too broad and oversimplifies the construct c. The measure is too detailed d. It can be used for diverse problems Question 3 A neurologist observes distinct changes in adults' brains five years prior to the onset of mild Alzheimer's symptoms? The scan would have ________ if five years later a significant percentage of patients with brain changes develop mild