Using Experimental Control to Reduce Extraneous Variability
9 - 1Chapter 9. Using Experimental Control to Reduce Extraneous VariabilityIntroduction to Experimental ControlCharacteristics of a True ExperimentAdvantagesLimitationsThe Notion of Experimental ControlControl Through SamplingControl Through Assignment to ConditionsIndependent Samples DesignCorrelated Samples DesignControl Through Experiment SettingControl Through Experiment Consent and InstructionsControl Through Experimenter InteractionsControl Through Observation and MeasurementThinking Critically About Everyday InformationControl Through Use of Control Groups / Research DesignPrimitive Research DesignsImportance of Control GroupsDesigns With Control GroupsCase AnalysisGeneral SummaryDetailed SummaryKey Terms Review
effective in controlling sources of extraneous variability. The key is to understand what is in the toolbox and when to use it. Figure 9.1 summarizes the control tools available. Let’s open this toolbox and take a peek inside. Figure 9.1 Summary of the research design tools that are available to achieve experimental control. Control Through ...
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