DrAiken Was Interested in Whether a Particular Effect Was Reliable,so

Multiple Choice

Dr.Aiken was interested in whether a particular effect was reliable,so he took a number of published studies and conducted special statistical procedures in order to compare the results across all of those studies.He found that the effect was very reliable across a variety of samples and situations.What type of procedure did Dr.Arnold conduct

A)  peer-review 
B)  random sampling 
C)  meta-analysis 
D)  replication