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

Quizplus · Accepted Answer

Using homogeneous groups is the strategy that is most likely to limit the generalizability of the results of the study because it entails grouping participants based on certain characteristics or criteria, which may not be representative of the general population. This can restrict the range of variation in the sample, limiting the generalizability of the findings to other populations with different characteristics. The other strategies listed actually seek to increase the generalizability of the results by controlling for extraneous variables or individual differences that might otherwise confound the data.

Which of the Strategies for Partial Control in an Ex