Building on Prior Research Nonexperimental studies are used to test the effects of smoking on human
Subjects due to concern about
A)experimental realism.
B)external validity.
C)internal validity.
D)research ethics.

Question

Quizplus · Accepted Answer

Nonexperimental studies are often used in cases where experimental studies would be unethical, such as directly exposing humans to harmful substances like tobacco smoke. Experimental studies involving harmful exposures would violate ethical standards, making nonexperimental approaches necessary to study the effects of smoking on human health.

Building on Prior Research Nonexperimental Studies Are Used to Test