The functional units of heredity are
A. genes.
B. neurotransmitters produced in the brain.
C. phenotypes.
D. basic chemical compounds that form the single helix of a DNA molecule.
Answer: A
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A group of mental health professionals specialize in the treatment of anxiety disorders. Based on current empirical evidence, these professionals would be well advised to
a. stick with one specific mode of treatment for all disorders. b. use medications with their more severe cases. c. use any combination of treatments, because they all appear equally effective with all anxiety disorders. d. select specific treatments according to specific symptoms exhibited by their patients.
One study revealed that __________ percent of newly homeless men in New York City reported a history of out-of-home care as children.
A. 7 B. 12 C. 15 D. 23
Case studies of children who were isolated from social contact for protracted periods of time have been used to support the hypothesis that
a. there is a critical period for language acquisition. b. social interaction plays little or no role in language acquisition. c. language learning is influenced primarily by nurture. d. children play an active role in language acquisition.
A substance that increases, or is believed to increase, a person's sexual desire is referred to as ____
a. Viagra c. Levitra b. an aphrodisiac d. Cialis