Experiments:
A) are conducted in both field and laboratory settings
B) involve the risk that people may modify their behavior
C) must involve control groups of some kind
D) all of the above

Question

Quizplus · Accepted Answer

Experiments can be conducted in both field and laboratory settings, and involve the risk that people may modify their behavior. Therefore, control groups must be included to ensure that any changes in behavior or outcomes can be attributed to the experimental manipulation and not external factors. So, all three options (A, B, and C) are correct.