In the first 6 months the acuteness of infants’ hearing
a. remains about the same as it was at birth.
b. undergoes rapid development.
c. improves to the level of adult hearing.
d. improves in terms of loudness, but not pitch and localization.
Answer: b. undergoes rapid development.
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Piaget argued that preschoolers do not grasp the concept of number. However, since that time, Gelman and her colleagues have found that preschoolers can ___
a. count accurately b. understand the effects of addition and subtraction on collections of objects c. indicate which of two numbers is bigger and which is smaller d. all of the above
Perry grew up in a small town and has gone to every high school reunion, despite moving across the country. Based on the research, at which reunion would he be the least self-conscious and more accepting of his past and present selves?
a. His 5th year reunion b. His 10th year reunion c. His 30th year reunion d. His 50th year reunion