Suppose you are interested in studying how prior exposure can affect color preference, but you know that color preferences are also a function of ethnic background. You could increase your study's sensitivity by studying only one ethnic group.
There is a problem inherent in this approach, which is that
a. your results would not be generalizable beyond the ethnic group you studied.
b. you would have to use a larger sample to be sure your results were valid.
c. you would have to use several levels of prior exposure to be sure you were getting an accurate picture of the relationship between exposure and preference.
d. you don't know which ethnic group prefers which colors.
Question 2
The most basic and simplest matching technique is to
a. make the extraneous variable an IV
b. hold the extraneous variable constant
c. individual matching d. frequency distribution matching
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