If you were interested in determining the effectiveness of a new medication in treating depression, it would be most important that you use
A. naturalistic observational methods.
B. correlational research.
C. a double-blind design.
D. a stratified sample.
Answer: C
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Aside from the possibility of being infected with HIV during the birth process, how else might a child become infected by the mother?
a. By no other means b. Through breast milk c. By physical contact with the mother after birth d. Only with HIV in utero or during the birth process, but not after the fetus is born
What z-score corresponds to a score that is above the mean by 2 standard deviations?
a. +2 b. +10 c. +20 d. Impossible to determine without knowing the value of the standard deviation
Which of the following is a perfect correlation?
A. 1 B. 0 C. 0.5 D. 0.8
Which of the following types of thought may contribute to creative problem-solving, but can also lead to thinking errors?
a. intuitive b. inductive c. deductive d. convergent