The period of the embryo is a time when
a. the blastocyst implants in the uterine wall.
b. the major body organs originate.
c. brain development is completed.
d. growth is slower than it is during the fetal period.
Answer: b. the major body organs originate.
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Charles is taking a prescription drug to reduce the anxiety he has been feeling since he lost his job. He finds that when he takes the drug, he experiences some short-term lethargy and impaired coordination. It is likely that Charles' physician has prescribed
a. a sedative. b. a narcotic. c. a stimulant. d. a hallucinogen.
A good balance of __________ goals and __________ goals is ideal in adolescence.
A. mastery; work-avoidance B. mastery; performance C. work-avoidance; performance D. personal; work-avoidance
__________ disorders are characterized by physical symptoms that do not have an identifiable cause
a. Dissociative b. Autistic c. Attention-deficit d. Somatoform
In operant conditioning, extinction occurs as a result of withholding ________
a. reinforcement b. the conditioned stimulus c. the unconditioned stimulus d. punishment