The tendency of subjects to react to a known or believed stimulus in the predicted manner is called:
A) domino effect
B) regression effect
C) diffusion effect
D) placebo effect

Question

Quizplus · Accepted Answer

The placebo effect refers to the tendency of individuals to react as if they have been given a drug or treatment, even when they have been given an inactive substance or no treatment at all. This can happen due to the individual's belief in the effectiveness of the treatment or their expectation of experiencing certain effects. It is often used in clinical trials to account for the influence of psychological factors on the results. Option A (domino effect) and Option C (diffusion effect) are not relevant to this concept, and Option B (regression effect) refers to the tendency for extreme values to become less extreme over time due to natural variation, which is unrelated to the topic.

The Tendency of Subjects to React to a Known or Believed