Doug is a long-term cocaine user. In addition to the rewarding properties of cocaine, what else is likely prompting Doug to continue using cocaine?
A. the severe withdrawal reactions following a lack of cocaine in his body
B. the social pressures to continue drug use
C. changes to the glutamatergic connections to his nucleus accumbens
D. the extra dopamine receptors he has developed in his hippocampus
Answer: C
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a. mania in summer, recovery in winter b. mania in winter, recovery in spring c. depression in winter, recovery in spring d. depression in summer, recovery in winter
An event that involves actual or threatened death, or serious injury to self or others, and creates intense feelings of fear, helplessness, or horror is defined by DSM-5 as involving
a. feelings of numbness. b. stress. c. traumatic stress. d. eustress.
A variable that is truncated and has limited variability is said to have _____
a. directionality b. a third variable c. causality d. a restricted range
Regarding chimpanzees' communication abilities, which of the following statements is FALSE?
a. The ability of chimpanzees in the language experiments to invent a simple grammar may help us better understand the roots of human language. b. The pygmy chimpanzee named Kanzi has the vocabulary and the ability to invent a simple grammar that are equal to those abilities shown by five-year old humans. c. Noam Chomsky insists that if chimps were biologically capable of language they would use it on their own. d. For the most part, natural animal communication is quite limited.