Answer: Dr. Jones can make sure the participants know that she has a Ph.D. from a prestigious university.
Explanation: Dr. Jones is designing an experiment on obedience to authority. She will set up a learning laboratory, and have participants deliver loud blasts of sound as punishment for incorrect answers, however, Dr Jones can increase the likelihood of the participants obedience by making sure sure the participants know that she has a Ph.D. from a prestigious university.