Which of the strategies for partial control in an ex post facto study is most likely to limit the generalizability of the results of the study?
a. Using change scores
b. Using ANCOVA
c. Using homogeneous groups
d. Building extraneous variables into the design
e. a and b
Question 2
Choose the term that is described in each of the phrases below. Not recommended in situations where there could be a learning to learn effect.
a. random assignment
b. randomized matching
c. homogeneous selection
d. analysis of covariance
e. use of subjects as their own controls
Negative feedback as a mechanism by which homeostatic control systems operate.
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