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In an Experiment to Test the Effects of a New

Question 393

Multiple Choice

In an experiment to test the effects of a new pain killing drug, the control group was given a placebo, which initially reduced their pain because the placebo


A) raised their endorphin levels.
B) lowered their endorphin levels.
C) activated the neurilemmas in their receptor sites.
D) deactivated the neurilemmas in the receptor sites.

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