Ch 4_Research Methods_student version

Ch 4_Research Methods_student version - (DV; observed)...

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Research Methods
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2 Scientific Method Term refers to the overall process of collecting and  evaluating data to form conclusions about questions Conducting scientific research involves: Defining a problem and specifying a  testable  hypothesis What kinds of questions might we be interested in?  How do we come up with questions and hypotheses?  Choosing a method (e.gs, experimental vs. correlational, cross  sectional vs. longitudinal, sample/recruitment, measures) Operationalizing the variables Dependent—what we are predicting Independent—the predictors
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Types of Research Designs Experimental: directly manipulate conditions Example: effectiveness of treatment Control (e.g., placebo) vs. experimental groups Independent variable (IV; manipulated), dependent variable 
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Unformatted text preview: (DV; observed) Random selection and random assignment Double-blind technique Operationalization Quasi Experimental: Looks similar but can’t assign to groups (e.g., comparing across genders) Case Studies 4 Correlations Genetics/Family/Twin Studies Group Activity In your small group, design an experiment to answer the question: What are the effects of alcohol consumption on driving performance? Some questions to consider: What is your research hypothesis? Why? What is the null hypothesis? What is your IV and DV? What are you control and experimental groups? How would you operationalize your variables? What factors would you consider in selecting participants? Why?...
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This note was uploaded on 01/29/2012 for the course ECON 445 taught by Professor Mcmanus during the Fall '08 term at UNC.

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Ch 4_Research Methods_student version - (DV; observed)...

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