Researchers are investigating the effects of music on compliance,wherein 50 percent of the participants listen to happy music and 50 percent listen to sad music.What technique should the investigators use to ensure that any post-test differences in the group's compliance will result from the differences in music listening?

Question

Quizplus · Accepted Answer

Random assignment is the best technique to ensure that any post-test differences in the group's compliance will result from the differences in music listening. This technique involves randomly assigning participants to either the happy music or the sad music group, so that there are no pre-existing differences between the groups that could account for any post-test differences. Random sampling, replication, and correlational measurement are not relevant to this design.

Researchers Are Investigating the Effects of Music on Compliance,wherein 50