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Posted on Mar 19, 2008, 9 a.m.
By Bill Freeman
An inert compound usually given to a portion of the subjects in a scientific experiment, in order to distinguish the psychological effects of the experiment from the physiological effects of the drug being tested.
An inert compound usually given to a portion of the subjects in a scientific experiment, in order to distinguish the psychological effects of the experiment from the physiological effects of the drug being tested.