validity - 031:010 - Research Methods in Psychology Spring,...

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031:010 - Research Methods in Psychology Spring, 2010 March 30 th
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IV DV Simple Experiments potential cause effect manipulated measured
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IV DV Simple Experiments Condition 1 ……………. .………………. Data 1 Condition 2 ……………. .………………. Data 2
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Outline the four types of validity (and threats to each) more details on Internal Validity
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IV DV Four types of Validity 1. Statistical Conclusion Validity The extent to which the inferences made about the sampling population are accurate Threats:
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Four types of Validity 1. Statistical Conclusion Validity The extent to which the inferences made about the sampling population are accurate Threats: a) use of incorrect statistical procedure b) violation of an assumption of the procedure c) [Type I error] bad luck d) [Type II error] bad luck and/or low power
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IV DV Four types of Validity 2. Internal Validity The extent to which a significant IV-DV relationship is causal and not spurious Threats: EV(s) confound(s) spurious
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Four types of Validity 2. Internal Validity
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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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validity - 031:010 - Research Methods in Psychology Spring,...

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