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EDPC 5310 Applied Research Design for Educators. Quantitative Research Design. Purposes of Research Design Experimental Research. What are purposes of research design?. Characteristics of Good Research Design. 1. 2. 3. 4. 5. Experimental Design.
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EDPC 5310Applied Research Design for Educators Quantitative Research Design
Purposes of Research DesignExperimental Research • What are purposes of research design?
Characteristics of Good Research Design • 1. • 2. • 3. • 4. • 5
Experimental Design • At least one IV is deliberately manipulated/vary by researchers.
Well-Designed Experiment • 1. • 2. • 3. • 4. • 5. • 6. • 7. • 8.
Experimental validity • Internal validity • External Validity
Threats to Experimental Validity • See page 141 & 142
Experimental Designs • Posttest only Control group design • Pre-post test control group design • Solomon Four groups design (p.149) • Factorial Designs • Repeated Measures Design • Taking medicine and then repeatedly tested for the effect to kick in or fade away
Quantitative Research DesignCorrelational Design • Describe or measure the degree of association between two or more variables or sets of scores. • Explaining • Predicting
Quantitative Research DesignCorrealtional Design • Characteristics:
Quantitative Research DesignSurvey Design • Survey Study • The researchers administer a questionnaire or interviews to a sample or a entire population to describe the attitudes, opinions, behaviors, or characteristics of the population.
Quantitative Research DesignSurvey Design: Characteristics • Sampling from a population • Collecting data
Quantitative Research DesignSurvey Design: Characteristics • Designing an instrument • Obtaining a higher response rate
Quantitative Research DesignSurvey Design • Differences between survey and design and experimental design:
Quantitative Research DesignSurvey Design • Correlational study and survey study are very similar: • Differences between survey and design and experimental design:
Quantitative Research DesignSurvey Design • Why is the survey preferred for the research project? • Advantage: Economical, Speed of data collection…
Quantitative Research DesignSurvey Design continued • Cross-sectional The researcher collect data at one point in time. Functions:
Quantitative Research DesignSurvey Design continued • Longitudinal Survey Study • Functions