Mark Conducts a Study for His Research Methods Class to Determine

Multiple Choice

Mark conducts a study for his research methods class to determine if consuming caffeine causes people to perform better on cognitive tasks.In his study,he gives half of his participants a glass of water and half of his participants a glass of cola,and then has them attempt to solve 15 math problems.He finds that people who drink caffeine beforehand solve more math problems than those who drink water beforehand.

-Mark decides to conduct a conceptual replication.Which of the following could be in the study to make it this type of replication?

A) Measuring a different group of participants
B) Having participants drink a caffeinated energy drink rather than a caffeinated cola
C) Measuring the same participants one week later
D) Having participants complete 10 math problems instead of 15