Dr Nielsen, a Fairview University Psychology Professor, Is Planning a Study

Dr. Nielsen, a Fairview University psychology professor, is planning a study of the factors that affect the motivation of employees. Dr. Nielsen is concerned that the results of his experiments may be misleading because employees in an experimental group tend to behave differently when they know they are being studied. This concern shows that Dr. Nielsen is aware of the

A) Hawthorne effect.
B) Taylor effect.
C) potential confusion between Theory X and Theory Y.
D) Heisenberg principle.