What is a placebo?

a. It is a procedure intended to eliminate the effects of independent variables.
b. It is a pill with no known pharmacological effects

c. It is an observer who does not know the experimenter's predictions.
d. It is a procedure given prior to asking for informed consent.

b

Psychology

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Addictive drugs, such as heroin, that dull the senses and induce feelings of euphoria, well-being, and relaxation are ______

a. barbiturates c. anti-psychotic drugs b. opiates d. hallucinogens

Psychology

When your body falls below its ideal level for body temperature, it will automatically begin to shiver in order to raise your temperature and bring your body back into

a. optimum potential level. b. thermostatic potential. c. homeostasis. d. incentive levels.

Psychology