Infants whose mothers maintained masklike expressions

a. resisted being picked up by their mothers at the end of the experiment.
b. seemed undisturbed.
c. tried to elicit a response from their mothers, but then turned away.
d. cried when later retesting was attempted.
e. developed insecure attachments.

c. tried to elicit a response from their mothers, but then turned away.

Psychology

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Samantha went from sitting to standing to walking and never crawled. Her motor development would be

a. considered still orderly. b. described as an abnormal cephalocaudal development. c. described as an abnormal proximodistal development. d. out of sequence due to excessive training by the parents.

Psychology

The average American infant first crawls at age

a. six months. b. 10 months. c. 12 months. d. 14 months.

Psychology