The best evidence that there is a critical period for language acquisition is the fact that:
a. infants babble phonemes that do not occur in their parents' native language.
b. toddlers maintain a capacity to discriminate phonemes that they have never heard.
c. people most easily master the grammar of a second language during childhood.
d. preschoolers often overgeneralize certain rules of grammatical structure.
Answer: c. people most easily master the grammar of a second language during childhood.
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According to Kohlberg, morality during the preconventional level is marked by
a. egocentrism. b. the desire to be well-regarded by others. c. the understanding that moral rules apply across all situations and cultures. d. the understanding that rules help maintain social order. e. the understanding that societal laws are based on ethical values.
What did researchers find when they studied the effects of hands-free cell phone conversations in a group of drivers?
a) The speed they maintained correlated with the pace of the conversation. b) The drivers were able to concentrate on the road effectively without the distraction of holding the phone. c) They experienced memory impairment for billboards and signs that would convey potentially needed information. d) They actually slowed down in an effort to maintain safety and focus on both the road and the conversation.