Two research studies that investigate the same phenomenon may lead to very different results because
a. researchers often do not collaborate because they want acknowledgment of being the first to document a phenomenon.
b. different research participants usually behave differently in different places, even with identical experimental manipulations.
c. results may differ when different types stimulus materials are used.
d. psychological research is so variable that it is difficult for researchers to get similar results.
Question 2
A researcher who is investigating whether two variables are associated may measure the variables as they occur, without manipulating them. Such an approach would be
a. qualitative.
b. experimental.
c. longitudinal.
d. correlational.
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