Author Question: Threats to internal validity include all of the following EXCEPT A) selection bias. B) ... (Read 73 times)

neverstopbelieb · **on:** Jul 13, 2018

Threats to internal validity include all of the following EXCEPT

A) selection bias. B) quasi-experimental.
C) testing. D) history.

Question 2

The principle of voluntary consent

A) means that participation in a study must be voluntary at all times.
B) has no relevance to human subject research.
C) applies only to animal research.
D) doesn't include telling human volunteers their rights.