According to a growing body of research, infant-directed speech _____________ across cultures
a) occurs with the same frequency
b) is basically similar
c) is quite different
d) shows few similarities
b
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What have researchers discovered about the stress hormone cortisol as it relates to children
cared for at home and those attending day care? a. Cortisol is released into the blood stream in equal amounts. b. Children in center base care have increasedcortisol levels from morning to afternoon. c. Children cared for at home have increased cortisol levels when they are with other children as they are less used to such social interactions. d. Home-reared children have cortisol levels that are high in the morning yet decrease by afternoon.
Visual acuity assesses how
a. clearly an infant can see. b. well an infant can perceive depth. c. well an infant can perceive color. d. retinal images in the left and right eyes compare.