Which of the following is/are possible interpretations of a high correlation between
depression and number of doctor visits?
a. going to the doctor makes people depressed
b. when people are depressed they visit the doctor more often
c. people who are sick are more depressed and they also need to see their doctors
more than those who are well
d. a, b, and c
e. neither a, nor b, nor c
Question 2
From a methodological standpoint, which of the following is superior?
a. retrospective design
b. true experimental design
c. quasi-experimental design
d. correlational design
e. case study design
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