How is doing a replication study useful?
A)A replication study can indicate what changes have occurred since the original study was conducted.
B)A replication study is only useful if the first study was conducted incorrectly.
C)If the original researcher replicates the study it is more useful than if other researchers replicate the original study.
D)A replication is usually less expensive because most of the work has previously been done.

Question

Quizplus · Accepted Answer

A replication study can help to determine if the findings of the original study were reliable and still hold true in current times. It can also help to identify any changes that may have occurred since the original study was conducted.

Answer: None of the other choices are correct. 
 A replication study is not only useful if the first study was conducted incorrectly, as the first study may have been conducted correctly but may need to be repeated to ensure the findings are reliable. It is also not necessarily more useful if the original researcher conducts the replication study, and it is not always less expensive as sometimes additional resources may be required to ensure the replication is conducted correctly.

How Is Doing a Replication Study Useful