Why are control groups included in experiments?
A. to determine whether two variables are related
B. to ascertain cause-and-effect relationships
C. to ensure that participant characteristics are essentially the same in each group
D. to ensure that the results may be generalized to the population
Answer:B
Why are control groups included in experiments?
A. to determine whether two variables are related B. to ascertain cause-and-effect relationships C. to ensure that participant characteristics are essentially the same in each group D. to ensure that the results may be generalized to the population