The positive symptoms of schizophrenia may be caused by

A) poor parenting.
B) a single recessive gene.
C) excessive activity in dopamine circuits in the brain.
D) a degenerative disorder of the brain.
E) an imbalance of norepinephrine and serotonin in the brain.

Answer: C

Psychology

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If a researcher sampled a group of people of a given age, then tested them again five years later, adding a new group of people as old as the original sample at first testing, the researcher would be using a

a. trend study. b. cohort study. c. cohort-sequential study. d. panel study.

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Research shows that men prefer to date women who are in ____ careers

a. traditional b. part-time c. nontraditional d. skilled trade

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