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Conducting Experiments
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SELECTING RESEARCH PARTICIPANTS Methods for selecting participants affects generalization of resutls Samples May Be Drawn From the Population Using: Probability sampling Nonprobability sampling Determine the Sample Size Larger samples provide more accurate estimates of population values
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MANIPULATING THE INDEPENDENT VARIABLE Setting the Stage Types of Manipulations Straightforward manipulations Staged manipulations Confederate Interpretation and replication
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MANIPULATING THE INDEPENDENT VARIABLE Strength of Manipulation Strong manipulations increase the chances that the IV will significantly effect the DV Not like real-world experiences Ethics Cost of the Manipulation
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MANIPULATING THE INDEPENDENT VARIABLE
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MEASURING THE DEPENDENT VARIBLE Types of Measures Self-report measures Behavioral measures Physiological measures Galvanic skin response (GSR) Electromyogram (EMG) Electroencephalogram (EEG) Functional MRI (fMRI)
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MEASURING THE DEPENDENT VARIBLE Sensitivity of the Dependent Variable Ceiling effect Floor effect Multiple Measures Cost Measures
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