In a proper double-blind experiment
a. the effects of an active drug treatment are compared with the effects of a placebo
b. neither the subjects nor the experimenters know what treatment the subjects receive until after all the drug tests are completed
c. subjects receive the active drug treatment and then are shifted to the placebo treatment without their being informed of the switch
d. only a and b above
d
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A(n) _____ is characterized by an individual who, typically while in REM sleep, experiences frightening dream content that he/she remembers vividly upon waking
a) nightmare b) episode of sleep apnea c) case of insomnia d) sleep terror
In between classes Marla usually sits around working on Sudoku puzzles. This is an example of __________
a) homeostasis. b) drives. c) stimulus motives. d) curiosity.