Workers at a factory are told they will be observed for the next month to see whether new lighting improves productivity. Productivity rises during the observation period regardless of which lighting is used.
The behavior change due to being observed is called
- A
Confounding
- B
The placebo effect
- Ccheck_circle
The Hawthorne effect
- D
Response bias
Explanation
Subjects altering behavior because they know they are being observed is the Hawthorne effect, distinct from placebo (response to a sham treatment).