Representing senior citizens, ________is the nation's largest organized interest group

Placebos are often used in drug studies in order to

A) reduce the number of participants needed. B) decrease the costs of expensive medication. C) enhance double-blind procedures. D) increase the potency of the drug.

In addition to blind control procedures, an effective method that reduces experimenter-participant contact and potential biases is

A) attentional controls. B) placebo controls. C) automation. D) replication.