exptlvars - 031:010 - Research Methods in Psychology...

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031:010 - Research Methods in Psychology Spring, 2010 March 25 th
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Predictions of Theories if X , then Y ( theory after “translation” ) X ( causal conditions are met ) therefore, Y ( so predicted data should be found ) Y can be a single event ( under specific conditions ) please bisect this line 2
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Predictions of Theories if X , then Y ( theory after “translation” ) X ( causal conditions are met ) therefore, Y ( so predicted data should be found ) Y can also be a pattern of data ( across conditions ) as the number of [inactive] bystanders is increased, the odds or the speed of any particular person helping someone in need should decrease 3
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Predictions of Theories if X , then Y X therefore, Y if X is varied*, then Y should vary* X is varied* therefore, Y should vary* * in a certain way 4
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Outline two classes of variables three ways that variables are treated 5
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Classes of Variables 1) Manipulated things that are completely under the control of the experimenter and are set by the experimenter; things that do not depend in any way on the subject e.g., lighting conditions, task difficulty, instructions 2) Measured [everything else] things that are (at least partly) determined by or built-in to the subject; things that cannot be known in advance e .g., attitudes, response time, gender, helping behavior 6
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This note was uploaded on 04/29/2010 for the course PSYCH 002 taught by Professor Freeman during the Spring '08 term at University of Iowa.

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exptlvars - 031:010 - Research Methods in Psychology...

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