The biggest advantage of doing an experiment, as compared to other research approaches, is that it
A) is cheaper and quicker.
B) imposes less stress on the participants.
C) allows researchers to draw conclusions about cause and effect.
D) is less likely to raise ethical issues.
Answer: C
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Professor Plum created class intervals from the test scores for his class. He made a line graph using these intervals on the X-axis and the proportion of students who answered a particular question correctly on the Y-axis. The result is
a. a discrimination index. b. a correlation index. c. an item characteristic curve. d. a histogram.
A key need for every individual, which usually limits the risk of suicide when it is satisfied, is
a. having integration in one's life b. having a profession c. having an education d. having hobbies e. having social graces
One possible explanation for why conditioned suppression occurs in rats is that
a. they attempt to run away when presented with a signal for shock. b. they freeze when presented with a signal for shock. c. they develop an aversion to food pellets paired with shock. d. they attack the signal that predicts shock.
Harmon is 40 years old. He is in a period of his life in which he is reflecting on his accomplishments, determining whether his life has been satisfying, and trying to decide his future behavior. According to Levinson, Harmon is going through ________
a. menopause
b. midlife transition
c. empty-nest syndrome
d. the fantasy period