A researcher is interested in testing the effectiveness of a new approach to leading discussion groups in his classes.He assigns all the females in one of his classes to use the new discussion method and all the males to use the old discussion method.The researcher will not be able to interpret the results because his study is flawed due to
A)his having limited the boundary of generalizing his results.
B)the fact that he tested only one of his classes.
C)his failure to manipulate an independent variable.
D)the confounding of gender and discussion methoD.

Question

Quizplus · Accepted Answer

By assigning females to use the new method and males to use the old method, the researcher has confounded the variable of gender with the variable of discussion method. Therefore, any differences observed between the two groups could be the result of either the discussion method or the gender of the participants, making it impossible to interpret the results accurately.

A Researcher Is Interested in Testing the Effectiveness of a New