__________ and __________ are especially frequent in toddlers' interactions with familiar agemates

A) Hostility; competition
B) Power assertion; negative emotion
C) Cooperative play; peer collaboration
D) Reciprocal play; positive emotion

D

Psychology

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African Americans score, on average, about __________ points lower than Whites on standardized IQ tests in the United States

a) 10 b) 15 c) 25 d) 5

Psychology

The earliest that a newborn has a chance of surviving is ____ weeks

a. 18-19 b. 23-24 c. 26-27 d. 29-30

Psychology