The rate of posttraumatic stress disorder in Iraq War veterans has been estimated to be between ________
A. 2% and 4%
B. 12% and 20%
C. 22% and 30%
D. 32% and 40%
B
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In their classic study of depth perception, Gibson and Walk (1960) found that
a. one-month-olds would not cross the visual cliff. b. boys crossed the visual cliff earlier than girls. c. infants would cross the cliff if their mothers encouraged them to do so. d. 8 out of 10 crawling infants would not cross onto the visual cliff.
Hebb proposed that childhood learning is best explained:
a. as a slow buildup of cell assemblies and phase sequences b. by insight and creativity c. by Gestaltist principles d. as the rearrangement of already existing cell assemblies and phase sequences
You are participating in a field experience this semester in a local third grade class. One of the boys, Isaac, has autism. During one of your visits, the regular teacher was gone and a substitute took her place. Isaac's most likely reaction to this new person would be:
a. to take advantage of the situation and get his way b. to increase his focus on the lesson that the substitute is teaching c. to ignore her d. to have a difficult time adjusting to the substitute and other new stimuli
Which statement about the Bayley Scales of Infant and Toddler Development is true?
A. Its standardization sample was designed to reflect the world's population in terms of SES and ethnic diversity. B. It is suitable for children between age 18 months and 3½ years. C. It measures gross- and fine-motor skills but not language skills, which are difficult to measure in infants and toddlers. D. Its cognitive and language scales are good predictors of preschool mental test performance.