For Piaget, the preschooler's egocentric speech
a. is trivially unimportant.
b. guides and controls the child's thinking.
c. is directed toward other children who are nearby.
d. occurs simultaneously with the child's thinking.
A
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Which research technique is best at eliminating confounding variables?
A. preexperiment B. true experiment C. quasi-experiment D. correlational
Dr. Simmons synthesized a new drug in her laboratory, and discovered that it enhanced dopamine activity in the mesolimbic system of rats. What conclusions should Dr. Simmons draw from this finding?
a. There is no risk that the drug would be addictive to humans, because rats and humans respond to substances very differently. b. Dr. Simmons should immediately try out the drug on some human volunteers to assess whether or not the drug is addictive. c. Based on the information she has, Dr. Simmons cannot draw any conclusions about the addictive potential of her new drug. d. There is a significant risk that the drug would be addictive to humans.
Autonomic is to _________ as somatic is to_________
a. peripheral; central b. central; peripheral c. homeostasis; movement d. movement; homeostasis e. sympathetic; parasympathetic
Suppose you are interested in how participants perform under different temperature conditions. You randomly select 30 participants and randomly assign them to work in one of three rooms. The rooms differ only with respect to temperature. You instruct all participants to solve the same jigsaw puzzle, and then you measure how long it takes each one to finish. The dependent variable in this research
is the a. jigsaw puzzle. c. temperature. b. time required to finish the jigsaw puzzle. d. room the participants are in.