2-22-11

2-22-11 - 2-22-11External Validity: Generalizing Your...

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Unformatted text preview: 2-22-11External Validity: Generalizing Your Experiment to the Outside•External validity – do your results generalize or apply to populations and situations that are different from the experimentoPopulation generalization – results should apply to people outside the sample in the experimentoEnvironmental generalization – results should apply to situations different from the one in the experimentoTemporal generalization – results should apply to different times than original experiment was conductedThreats to External Validity (Methods)•Interaction of Testing and Treatment – the pretest cues the participant to the treatment and they respond differently than they would have if they didn’t have a pretest•Interaction of Selection and Treatment – occurs when the results are only true of you participants and not to larger population•Reactive Arrangements – the artificial conditions of the experiment make it difficult to generalize to the real world•Demand characteristics – make generalizations difficult because it is not clear...
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This note was uploaded on 04/05/2012 for the course PSY 3213 taught by Professor Staff during the Spring '11 term at FSU.

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2-22-11 - 2-22-11External Validity: Generalizing Your...

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