DNA stands for:
a. deoxyribonucleic acid. c. diophosphate nucleic acetone.
b. dionyotic acetate. d. dionucleic acid.
A
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A child learns to call a dog "bow-wow" and now calls all animals he sees "bow-wow.". This is an example of
a. telegraphic speech. b. overextension. c. egocentric speech. d. morpheme.
Since 1960, the suicide rate among young people ages 15-24 has
a. declined by 20%. b. remained steady. c. doubled. d. tripled.
According to the Greek physician Hippocrates, yellow bile is associated with _____ disposition
A) sanguine B) melancholic C) choleric D) phlegmatic
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.