A researcher plans to conduct a research study comparing two treatment conditions with a total of 20 scores in each treatment.Which of the following designs would require only 20 participants?
A)an independent-measures design
B)a repeated-measures design
C)a matched-subjects design
D)all of the other options require only 20 participants

Question

Quizplus · Accepted Answer

A repeated-measures design uses the same participants in both treatment conditions, so only 20 participants are needed to obtain 20 scores in each condition.

A Researcher Plans to Conduct a Research Study Comparing Two