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Infants' crying bouts typically peak and then diminish when they are about
Q4: According to Vygotsky, cognitive development, and therefore
Q21: Regarding the timing of skills at certain
Q52: Attachment theory was originally proposed by John
Q76: Basically, false-belief tasks assess the extent to
Q78: As siblings become older, they tend to<br>A)drift
Q85: In one study, 18-month-olds could tell the
Q90: Children and adolescents spend more than 6
Q91: By the time of birth, the head
Q92: Research has shown that sex-related behaviors are
Q100: Maestripieri's studies with monkeys found all of