Drugs that affect behavior exert their effects mainly by what means?
a. They increase or decrease the synthesis of hormones
b. They increase or decrease the velocity of action potentials.
c. They increase or decrease activity at certain synapses.
d. They increase or decrease blood flow to the brain.
c
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Vygotsky's sociocultural theory emphasizes that children
A) are born with prewired understandings that permit a ready grasp of new information. B) "think" with their eyes, ears, hands, and other sensorimotor equipment. C) live in rich social and cultural contexts that affect the way their cognitive world is structured. D) discover virtually all knowledge about the world through their own activity.
A strength of experimental studies is that
a. they measure behavior in a natural setting. b. no manipulation of variables is done. c. they allow conclusions about cause and effect. d. only a single study is needed to definitely settle a question.