How Is Doing a Replication Study Useful

Multiple Choice

How is doing a replication study useful?

A) A replication study can demonstrate the reliability of the original findings and indicate what changes have occurred since the original study was conducted.
B) A replication study is useful only if the first study was conducted incorrectly or if there are other reasons to be suspicious of the results.
C) Unless there is a well-founded suspicion of deliberate fraud, there is no reason to replicate a study.
D) A replication is usually less expensive because most of the work has previously been done.