A researcher is studying the social effects of being learning disabled. This study is ex post facto because the
a. subjects are already known to differ on the dependent variable.
b. subjects are already known to differ on the independent variable.
c. a and b
d. None of these are true.
Question 2
Choose the term that is described in each of the phrases below. Assigns subjects randomly to groups after subjects are paired on qualities that could affect the dependent variable.
a. random assignment
b. randomized matching
c. homogeneous selection
d. analysis of covariance
e. use of subjects as their own controls
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