A. curvilinear relationship
B. effect of extraneous variables
C. natural experiment
D. placebo effect
Correct Answer: placebo effect ✔
Last Updated: May 03, 2024
A. curvilinear relationship
B. effect of extraneous variables
C. natural experiment
D. placebo effect
Correct Answer: placebo effect ✔
Last Updated: May 03, 2024