In drug-treatment studies, double-blind procedures minimize outcome differences between experimental and control conditions that could be attributed to:
A) replication.
B) random assignment.
C) operational definitions.
D) random sampling.
E) placebo effects
It is a remarkable phenomenon in which a placebo a fake treatment, an inactive substance like sugar, distilled water, or saline solution can sometimes improve a patient's condition simply because the person has the expectation that it will be helpful. Expectation to plays a potent role in the placebo effect. The more a person believes they are going to benefit from a treatment, the more likely it is that they will experience a benefit.
