For each of the following experimental briefs: a.            Identify the type of design used to test the hypothesis of the study b.            Explain why this design might have been used...

For each of the following experimental briefs:

a.            Identify the type of design used to test the hypothesis of the study

b.            Explain why this design might have been used

c.             Identify the threats to internal validity

A selection threat occurs when

a.            A differential selection group is used.

b.            Selection group is predisposed to the result.

c.             Selection bias has taken place.

d.            Selection has not been done by experts.

e.            All the above