Exam 2: Doing Social Psychology Research

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In a well-designed experiment, all participants must

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What are the two essential characteristics of an experiment? Why, and how, is each of these important for the internal validity of the experiment?

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One essential characteristic of an experiment is that the researcher has control over the experimental procedures.The researcher manipulates the variables of interest and keeps all else uniform.That is, all participants should be treated exactly the same way--except for the manipulations that the experimenter is investigating.The other essential characteristic of an experiment is that all participants are assigned randomly to the different conditions.Because of random assignment to condition, at the beginning of the study there should be no systematic differences between the groups of participants.Internal validity is the degree to which there can be reasonable certainty that the independent variables in an experiment caused the effects obtained on the dependent variable.By having a great deal of control over the experimental procedures, researchers can help ensure that the only differences between conditions are the manipulations themselves and not some other factors.If other factors vary along with the independent variables, then it is less clear that the independent variables are the cause of any differences found in the dependent variable, thereby reducing the internal validity of the experiment.Even if the researcher has a great deal of control and ensures that the only differences in the treatment received by the participants across conditions are the manipulations of the independent variables, it is possible that the participants in one condition are different from the participants in other conditions in important ways just by random chance.If this is the case, the differences found in the dependent variable may be a function of these other differences rather than the result of the manipulations.If the participants are randomly assigned to the conditions, however, the chances that the participants differed in ways other than those created by the manipulations become very improbable, especially with larger samples.Differences found in the dependent variable can thus be attributed to the manipulations of the independent variables rather than to pre-existing differences among the participants, thereby creating internal validity.

Which of the following types of studies must be approved by an institutional review board?

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Which of the following is not a challenge mentioned by your textbook in conducting cross-cultural social psychological research?

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In comparison to self-report measures, observational measures are not affected by

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When researchers find that the results of their studies could have occurred by chance only five or fewer times in 100 possible outcomes, they conclude that the results

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Buster runs an experiment in which she finds that participants placed in a good mood by a happy film clip are more likely to offer help to a fellow participant than participants who see a sad film clip.Gob suggests that perhaps this difference simply results from the fact that the participants in the happy film clip condition were more helpful people to begin with.What methodological aspect of a successful experiment can Buster point to in order to refute this criticism?

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External validity refers to the degree to which

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Rosenthal and Fode (1968)asked students to teach a rat to learn a maze.Some students were told they had been given a genetically engineered "intelligent" rat, whereas others were told that they had a "dull" rat.Although there were no actual differences among the rats, the "intelligent" rats learned the maze more quickly than the "dull" rats.Which of the following topics discussed in your book can best explain the results of this experiment?

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Your book describes a study in which participants were provided with information about either the success rate or failure rate of condoms.The findings of this study indicate that

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The most important aspect of sampling in a survey study is

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All of the following are goals of basic research except

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Social psychologists use the scientific method when they study human behavior in order to

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Zachary observes a significant negative correlation between binge drinking and grades among college students.Which of the following is true?

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In a study concerning the cues that signal deception, Winston uses the number of times a person shifts in his or her seat as a measure of lying.Virginia points out that people may shift their position because they are nervous about being perceived as a liar, even though they are actually telling the truth.Virginia is questioning the _____ of Winston's measure of lying.

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Which of the following statements concerning correlational research is true?

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Latrell, the editor of a popular sports magazine, would like to know more about the demographics of the magazine's readers.He designs a questionnaire to assess this information and sends it to a random sample of the magazine's readers.Latrell is conducting a(n)

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Relative to experimental studies, the primary disadvantage of correlation studies is that

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Which of the following examples best reflects the use of interrater reliability?

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The different research methods used by social psychologists tend to emphasize all of the following except

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