Selena drinks at least six cups of coffee a day. Within an hour of drinking coffee, she feels energetic and more alert, and she has an increased positive mood. Once the caffeine wears off, she feels miserable; she experiences irritability, fatigue, and the worst headaches. Selena would most likely be told she is experiencing:
A. caffeine intoxication and caffeine withdrawal.
B. caffeine use disorder, an official disorder in DSM-5.
C. stimulant use disorder.
D. combination substance use disorder.
Ans: A. caffeine intoxication and caffeine withdrawal.
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The blind spot is formed
a. by an abnormally shaped eyeball. b. where the cornea and lens are connected. c. where the optic nerve leaves the eye. d. when a person has brain damage.
Amateur naturalists usually begin painfully identifying the birds, butterflies, mammals, or plants they find by mechanically searching through published field guides until they find the correct species name and description. These amateur naturalists are identifying through which type of problem-solving?
a. insight b. rote c. understanding d. the use of heuristics
In an experiment, the presence of a(n) __________ is manipulated by the researchers so that its effects may be determined
a. dependent variable c. placebo b. independent variable d. observer
One study supporting the ______________ theory of leadership suggested that leaders were more likely to score high on extraversion, openness to experiences, and conscientiousness than were non-leaders
a. universal b. natural selection c. state d. great person