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Unformatted text preview: • Attrition • Diffusion of treatment • Sequence effects Other Threats to Validity • Subject Effects – Demand Characteristics – Placebo Effect • Experimenter Effects – Experimenter expectancies...
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This note was uploaded on 09/13/2010 for the course PSC 78918 taught by Professor Dawnteearly during the Fall '09 term at UC Davis.
- Fall '09