Knowing that a greater number of neurons correlates with higher performance on the Mental Rotations Test (MRT), a standard measure of spatial ability, which of the following explanations is more likely true?
Answer: Men performed better on MRT and had greater cortical surface area in the parietal lobe
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Using Campbell and Stanley's notation, an experimental design is illustrated as O1 X1 O2 X2 O3 . This design involves _____ treatment levels
a. one c. three b. two d. four
Approximately what percentage of new mothers experience postpartum depression?
A) 5–10% B) 10–15% C) 1–5% D) 15–20%
Which of the following is true of the German psychiatrist Emil Kraepelin?
A. He was the first to distinguish thought disorders from the mood disorders of melancholia. B. He was the first major proponent of humane therapies. C. He coined the term psychophysics for the study of the psychological and physical worlds. D. He established the view that knowledge and thoughts come from observations.
When test scores have been shown to accurately predict later performance,
then the test is considered to have a. predictive reliability b. predictive validity c. internal consistency d. both a and b, but not c