Author Question: Which of the following is true concerning the non-equivalent control group pretest-posttest design? ... (Read 59 times)

Mimi · **on:** Jun 19, 2018

Which of the following is true concerning the non-equivalent control group pretest-posttest design?

a. Comparisons can be made between groups on the pretest and the posttest.
b. Comparisons can be made within groups from the pretest to the posttest.
c. Because subjects are not randomly assigned to groups, we cannot say that they are equivalent.
d. All of the other alternatives are true.

Question 2

An uncontrolled extraneous variable is _____.

a. a confound
b. internally valid
c. externally valid
d. a subject variable