Double-blind studies control for __________
A) only the placebo effect.
B) only the experimenter effect.
C) both the placebo effect and the experimenter effect.
D) extrinsic motivation

Question

Quizplus · Accepted Answer

Double-blind studies control for both the placebo effect and the experimenter effect. The placebo effect is when participants improve simply because they believe they are receiving a treatment or intervention, while the experimenter effect is when the expectations or biases of the experimenter unknowingly influence the study's results. By using a double-blind design, where both the participant and experimenter are unaware of who is receiving the treatment or placebo, these effects can be controlled for. Extrinsic motivation is not directly related to double-blind studies.

Double-Blind Studies Control for __________