University of Phoenix Material

Week Eight Homework Exercise

Answer the following questions covering material from Ch. 14 of Methods in Behavioral Research:

1. What is replication, and what role does it play in increasing the external validity or generalizability of a study? In what way is the IRB involved in using participants in a research study?

Replication is described as or defined as copying something. Replication in

research studies provides a safeguard against limited generalizability. Replication is often

used to identify the generalizability to a variety of different groups. This also helps

determine not only reliability but also validity as well. The IRB is involved in using

participants in a research study by protecting the rights and also welfare of the...