Jorge studies the effects of mnemonic training on learning vocabulary. He randomly assigns half of the students to a no treatment control group and assigns the others to a mnemonic training group. He assesses students at the end of the study and compares how many words they know. Which of the following designs is Jorge best illustrating?
A) Pretest-posttest control group design
B) Nonequivalent group control group design
C) Posttest-only control group design
D) Time series design

Question

Quizplus · Accepted Answer

This is a posttest-only control group design, as Jorge is only collecting data after the treatment has been administered and has a control group to compare against. Option A, the pretest-posttest control group design, would involve collecting data before and after the treatment, while Option B, the nonequivalent group control group design, would involve groups that were not randomly assigned. Option D, the time series design, involves collecting data at multiple points in time before and after the treatment.

Jorge Studies the Effects of Mnemonic Training on Learning Vocabulary