Research Handouts

Jun 17th, 2015
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Researchers often investigate the effects of two or more independent variables simultaneously; this type of experiment is referred to as a complex design.

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Research HandoutsRabia sajjadComplex DesignsResearchers often investigate the effects of two or more independent variablessimultaneously; this type of experiment is referred to as a complex design.The simplest complex design has two independent variables (IVs) and onedependent variable (DV). The simplest independent variable has two levels(conditionsComplex designs are also called factorial designs.An experiment conducted by Baaren and his colleagues (2004) conducted anexperiment using 2 x 2 design to see whether mimicry (coping) helps in promotingpro social (helping) behaviors2 x 2 design The factorial design with 2 independent variables both with 2 levels is called a 2 x 2design (read 2 by 2"). It has four conditions. So what is meant by 2x2 x2 2x2 x2 x2Research hypothesisMimicry increases helpfulness.1st Experiment: Single IV was manipulated using RGD.IV 2 levels.mimicry or non mimicry.DV whether they were helping.One group was randomly assigned to mimicry or another to non mimicry group andthan DV was assessed.All participants in the mimicry group whereas 33% of non mimicry group helped.2nd Experiment to test whether helped the participant other than the experimenter.Same IV as in 1st experiment were used.New experimenter was not a manipulated variable after completing the 1stexperiment the new experimenter entered in the room.Mimicked one 84% co

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