A(n) _____ is an inactive substance, such as a sugar pill or a saline injection, that is given to subjects to make them think they've taken a drug.
A)placebo
B)extraneous variable
C)dependent variable
D)control drug

Question

Quizplus · Accepted Answer

A placebo is a substance without any therapeutic effect that is given to subjects in a clinical trial to serve as a control group, against which the effects of a drug can be compared. Its purpose is to convince subjects that they are receiving treatment when they are not, in order to remove the psychological bias of expecting a certain outcome. Placebos are usually made to look and taste like the real treatment, but they do not contain any active ingredient.

A(n) _____ Is an Inactive Substance, Such as a Sugar