Which of the following is a characteristic of stimulants?

A. analgesia
B. depression
C. an increase in arousal
D. anxiety reduction


Answer: C

Psychology

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Köhler's approach to problem solving in chimpanzees

a. emphasized the importance of insight. b. emphasized the conceptual nature of problem solving. c. went beyond trial and error learning. d. all of the these

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_____ are photoreceptors that allow us to see in very low light.

A) Bipolar cells B) Retinal ganglion cells C) Rods D) Cones

Psychology

Sierra is constantly worried that everyone whom she comes

in contact with is full of germs, so she is constantly rushing off to wash her hands. Sierra suffers from which psychological disorder? A) Clinical depression B) Obsessive-compulsive disorder C) Social anxiety disorder D) Schizophrenia

Psychology

Luke, a researcher, develops a psychological test to assess impulsiveness among adults and publishes it online. After a month, he publishes an article in which he presents evidence that college students tend to get essentially the same score if they take the test twice, two months apart. However, when Bianca, Luke's guide, looks at the questions included in the test, she thinks that they relate to a person's sociability rather than his or her impulsiveness. In this scenario, Bianca is specifically doubtful of the ________ of Luke's test.

A. validity B. measurability C. reliability D. objectivity

Psychology