Problems with the weak pretest-posttest quasi-experimental design include:
A) Random assignment of groups to treatments/conditions
B) Participants assign themselves to groups
C) The researcher does not have control over the IV
D) b and c

Question

Quizplus · Accepted Answer

The weak pretest-posttest quasi-experimental design lacks random assignment of groups to treatments/conditions (a) and instead allows participants to assign themselves (b). Additionally, the researcher does not have control over the independent variable (c). Therefore, the best choice is D (b and c).

Problems with the Weak Pretest-Posttest Quasi-Experimental Design Include