Transcription of Chapter 9. Using Experimental Control to Reduce Extraneous ...
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9 - 1 Chapter 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
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 Sampling Methods of sampling, discussed in Chapter 7, can effectively reduce extraneous variability due to
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