Which of the following have been identified as early precursors of autism spectrum disorder?
a. deficits in eye contact
b. reduced social interest
c. atypical sensorimotor development
d. all of these
D
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The study of Simon, a deaf child born to deaf parents who were late learners of American Sign Language (ASL), illustrates children's
A) inability to acquire language without direct exposure to it. B) remarkable capacity to invent language. C) innate ability to acquire spoken language. D) inability to acquire language beyond the sensitive period.
Researchers studying the psychometric adequacy of the Anxiety Sensitivity Index (ASI) allege the following criticism:
a) It has a high false-positive rate. b) It does not correspond with current diagnostic criteria. c) It overemphasizes physiological symptoms. d) Its number of factors remains uncertain.