A change in a population’s genes from one generation to the next due to chance or accident is referred to as a ____
a. mutation
b. migration
c. splicing event
d. genetic drift
ANSWER:
d
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Longitudinal studies of deaf children whose parents did not expose them to sign language found that at about 12 months of age __________.
A. the children could not communicate B. they used a single sign to stand for an object, comparable to hearing children producing their first word C. their cognitive development was abnormal D. their signs were ordered in a different way from the telegraphic speech of speaking children
According to the DSM-5, acute stress disorder becomes PTSD when __________.
A. the trauma is an event out of the realm of normal life experience B. the symptoms last for more than two weeks C. the symptoms last for more than four weeks D. the symptoms begin within six months of the trauma
According to statistical data the prevalence of schizophrenia is about ____%.
A. 0.01 B. 1 C. 5 D. 10
The meaning derived from morphemes, words, and sentences is referred to as __________
a) syntax. b) semantics. c) pragmatics. d) heuristics.