If patients with chronic pain and without a history of psychological disturbances or substance abuse are allowed to self-administer narcotics to control their pain, the majority of them

a. develop a strong addiction to narcotics
b. self-administer much larger doses than they would if the narcotics were administered to them by physicians at fixed intervals
c. develop a rapid and marked tolerance to the effects of narcotics
d. none of the above

d

Psychology

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Groups of subjects that are not expected to differ in any systematic way before the independent variable is presented in an experiment are called ______ groups

a. equal b. equivalent c. population d. between-subjects

Psychology

Internal functions such as heartbeat, breathing, and stomach contractions are controlled by the ____________________ nervous system

Fill in the blank(s) with correct word

Psychology