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STRATEGIES OF RESEARCH DESIGN 2 Experimental Design
Experimental Manipulations and External Validity
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alternative analysis approach assessment assignment attempt attitude attribute behavior chapter choice coding communication complete concerning Consider consideration consistency construction correlation course critical dependent determine direction discussed effects employed error example expected experiment experimental extent extreme fact factors findings given hypotheses important increase independent variable indicate individual initial interest internal interview investigation involving issues laboratory limited major manipulation mean measures methods nature object observational obtained occur operations participation particular performance persons position possible potential predicted presented pretest probably problem procedures prove psychological question random ratings regression relationship relative reliability represents response sample scale scientific scientist scores selected setting simulation situation social social psychology sources specific statistical subjects suggested techniques theoretical theory tion treatment true unit usually validity variable variation various