A Researcher Does a Study Where He Examines the Effects

Multiple Choice

A researcher does a study where he examines the effects of a new reading program for teaching reading comprehension. He randomly assigns 30 students to an experimental group and 30 students to a control group. He then posttests the students after the program to see whether they are different in reading performance. The design used by the researcher is the:

A) Pretest-posttest control-group design
B) Posttest-only design with nonequivalent groups
C) One-group posttest-only design
D) Posttest-only control-group design