Which of these represents the BEST approach for choosing tests to use in a selection battery?
A) a minimal correlation between tests that each have unique predictive value
B) a minimal correlation between tests that each have low r2 values
C) a maximal correlation between tests that have highly overlapping predictive value
D) a maximal correlation between tests and low multiple R
Answer: A) a minimal correlation between tests that each have unique predictive value
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What is a good rule of thumb when trying to determine the impact of environmental toxins on fetal development?
a. If it does not bother the mother, it will not bother the developing fetus. b. If it does not bother young children aged 6 to 10, it will not bother the developing fetus. c. The impact on fetal development must be assessed separately from the impact on children or adults. d. The fetus is well protected. There are very few toxins to which it is likely to be vulnerable.
In the one factor between groups design, in general, the alternative hypothesis states that _____
a. all group means will be different b. only one group mean will be different c. there will be a difference between group means d. no group means will be different