What is the leading preventable cause of hearing loss in human beings?
a) ingestion of oto-toxic medications during infancy
b) exposure to loud noises
c) prenatal exposure to teratogens that interrupt normal hearing development
d) penetrating or traumatic head injuries
ANS: B
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If within-groups variance is large, then we have observed:
a. experimenter effects. b. an effect of the dependent variable. c. a large amount of error variance. d. an effect of the independent variable.
Which of the following is one of the typical responses that people show in the aftermath of social rejection?
a. Experience a feeling of intense anxiety. b. Be able to perform complex cognitive tasks. c. Show a high degree of self-regulation. d. Be especially attuned to social cues and information about others.
Gail conducts an experiment that may produce harmful effects. To protect her subjects, she thoroughly explains the purpose of the experiment, and helps subjects deal with possible doubts or guilt arising from their behaviors in the experiment. Gail is going through the process of:
A. random selection B. statistical procedures C. introspection D. debriefing
To help her class learn the state capitals and to reduce prejudice, an elementary school teacher divides the class into several ethnically diverse groups. She then gives each group member a different set of ten states and their capitals. After each student learns the ten capitals, she must teach them to the other members of the group. This is an example of
A. cognitive dissonance theory. B. the jigsaw technique. C. the matching hypothesis. D. an illusory correlation.