A scientist placed some bacteria in a sterile dish of agar. He counted the number of live bacteria at regular intervals afterward. He observed that at first the bacteria grew slowly at first, and then they increased very rapidly in number. Finally, the count leveled off and then declined rapidly as the food supply was used up. A graph of this relationship would be
a. U-shaped
b. linear
c. monotonic
d. nonmonotonic
d
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A researcher wants to look at a few children using a method where he can gather a lot of information on what has happened in their lives so far. Which method should he use?
A. naturalistic-observation B. case study C. correlation D. standardized test
DSM-5 personality disorders are grouped into three clusters. Which of the following most accurately represents the three clusters?
A. Odd or eccentric; dangerous or inconsistent; shy, uncommunicative, or withdrawn B. Shy, uncommunicative, or withdrawn; anxious or fearful; dangerous or inconsistent C. Shy or withdrawn; dramatic, emotional, or erratic; bizarre or thought-disordered D. Odd or eccentric; dramatic, emotional, or erratic; anxious or fearful
According to 2018 Monitoring the Future data, __________ of American high school seniors used alcohol in the last month.
A. 10% B. 20% C. 30% D. 40%
Anne experienced extreme pain at the dentist as a child. Now, she goes to a different dentist, but feels her heart race when she arrives, and goes down when she leaves
Her heart racing whenever she goes to the dentist is due to __________, and the calming feeling when she leaves is due to __________. a) classical conditioning, operant conditioning. b) operant conditioning, classical conditioning. c) operant conditioning, meditational learning. d) operant conditioning, modeling.