All of the following are characteristics of Down syndrome, EXCEPT
A) round faces.
B) a wide, flat nose.
C) a protruding tongue.
D) blood that does not clot properly.
D
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Extinction is the treatment of choice for infant sleep problems when
a. parental attention is the maintaining consequence. b. the problem primarily involves sleep onset problems. c. the child is at least 18 months of age. d. other procedures have proven ineffective.
Suppose that you have solved a problem by letting the letter x represent one unknown and by letting the letter y represent another unknown. Which problem-solving method have you used?
a. symbols b. imagery c. matrix d. graph
Regarding their personality, happier people tend to be
a. extroverted, optimistic, and worry-free. b. introverted, careful, and responsible. c. spontaneous, impulsive, and carefree. d. independent, aggressive, and charming.
Two-year-old Joey says "car" to describe his family's car, not any other. This is the word error called
a. syntactical bootstrapping. b. vocabalizing. c. overextension. d. underextension.