By controlling all extraneous variables and by randomly assigning people to different experimental conditions, an experimenter can achieve high
a. interjudge reliability.
b. generalizability.
c. replicability.
d. internal validity.
Question 2
Which of the following factors was NOT necessary to ensure the internal validity of the Latan and Darley seizure study described in the text? They
a. made sure their conditions varied on only the key variable.
b. made sure that the seizure overheard by participants was identical for everyone.
c. randomly assigned participants to groups or conditions.
d. asked participants about their knowledge of epilepsy before beginning the experiment.
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