Piaget believed that infants under the age of one year cannot use internal representations and have no memory of people and objects that are out of sight. Such abilities, he believed, emerge only after
a. a child becomes less egocentric.
b. a long period of sensorimotor development.
c. speech has progressed beyond its earliest stages.
d. a child develops reversibility.
b
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Alicia has a lot of friends at school. She seems to know everyone. But it seems that many of her relationships are fairly superficial. They don't seem like they are very deep. Alicia is likely to measure high on which Big Five trait?
a. conscientiousness b. extraversion c. neuroticism d. agreeableness
The Tuskegee syphilis study and the study that investigated the effects of plutonium-239 injections were discussed as examples of
a. physically harmful research. b. psychologically harmful research. c. valid, ethical research paradigms. d. beneficial research programs that made use of non-human animal subjects.