Heroin users often report
a. the high as a euphoric rush. c. increased sex drive.
b. increased hunger. d. all of these
A
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At the current time, which of the following statements about our knowledge of whether animals can use humanlike language is true?
A. It has been clearly shown that animals cannot use humanlike language. B. All animal communication is instinctual and, thus, is not language. C. Only primates, such as monkeys and chimps, show any sign of language-like behavior. D. It is still unclear if animals can show humanlike language at any level of development.
In what way are newborns more linguistically sophisticated than the average adult? a. They do not habituate to new phonemes
b. They can produce more phonemes. c. They can distinguish between phonemes from all languages. d. They have no particular linguistic advantages over adults.
Antidepressant medication tends to increase the concentration of __________ in the brain
a. dopamine c. acetylcholine b. serotonin or noradrenaline d. norepinephrine
In an experiment to study the effects of fertilizer on plants, the growth rate of the plants would be the variable
a. dependent b. extraneous c. experimental d. independent