11 - 9/26/11 Research Validity Def: Appropriateness of...

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9/26/11 Research Validity Def: Appropriateness of inferences drawn from data A braoder question than measurement validity 4 types o Internal o External o Statistical/Conclusion o Construct Internal Validity The extent to which we can infer that a relationship between 2 variables is casual or that absence of a relationship implies absence of cause j Think – inside the experiment o Is it a sound design Determinants of internal validity Internal consistency/standardization of research design and variables o IV=cause o DV=effect Not: confound = cause Quality of research design: Controlling extraneous and confounding variables External Validity Inference that results can be generalized to and across alternate measures, participants, settings, and times How generalizable are the results? Inverse relationship between internal and external validity Example I measure verbal intelligence by having people perform either SAT problems or problems developed by researchers from another lab
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This note was uploaded on 12/06/2011 for the course PSYC 204 taught by Professor Payne during the Fall '08 term at Texas A&M.

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11 - 9/26/11 Research Validity Def: Appropriateness of...

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