Positive Relationships [Professor Name] [Class Section Number]
Research Designs [Professor Name] [Class and Section Number]
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Transcript of Research Designs [Professor Name] [Class and Section Number]
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Research Designs[Professor Name]
[Class and Section Number]
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What do you think?
1. The more highly educated a woman is the fewer children she is likely to have.
2. The less time students spend on Facebook the better their grades are.
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Overview
• Experimental Research• Correlational Designs• Surveys• Quasi-Experimental Design• Longitudinal Designs• Trade-offs• Methods• Activity: Build a Study
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Experimental Research
Does highlighting improve retention of information?
Randomly draw names Assign them to highlight
Other half no highlighting
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Experimental Research
Research or intuition?
Independent variable?
Dependent variable?
Importance of random assignment?
Discussion
Does highlighting improve retention of information?
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Experimental ResearchPlacebo Effect
Confounding variables?
Participant demands affect outcomes?
Experimenter expectations influence outcomes?
Discussion
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Overview
• Experimental Research• Correlational Designs• Surveys• Quasi-Experimental Design• Longitudinal Designs• Trade-offs• Methods• Activity: Build a Study
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Correlation is not Causation
Facebook Depression
FacebookDepression
Depression
No Friends
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Activity: Correlation Coefficient
Relationships Time on social media &
exam scores
Animal-lover & owning a cat
Having a sweet tooth & number of desserts consumed
Correlation Coefficient
r=.75, r= -.50, r= .20
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Correlational Designs
Which correlation is stronger? Why?
Which correlation is positive? Why?
Which graph representso r= -.21? r=.90?o Highlighting study?o Caffeine study?
Why can’t a researcher say beliefs about caffeine cause greater alertness?
Discussion
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Overview
• Experimental Research• Correlational Designs• Surveys• Quasi-Experimental Design• Longitudinal Designs• Trade-offs• Methods• Activity: Build a Study
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Surveys
Describe how surveys were used in the caffeine study. Describe other uses of surveys. Benefits?
Discussion
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Overview
• Experimental Research• Correlational Designs• Surveys• Quasi-Experimental Design• Longitudinal Designs• Trade-offs• Methods• Activity: Build a Study
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Quasi-Experimental Design
No random assignment
Different independent variables
Problems
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Overview
• Experimental Research• Correlational Designs• Surveys• Quasi-Experimental Design• Longitudinal Designs• Trade-offs• Methods• Activity: Build a Study
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Longitudinal Studies
What are the key characteristics of a longitudinal study?
What are the benefits of longitudinal studies?
What are some of the challenges?
Discussion
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Overview
• Experimental Research• Correlational Designs• Surveys• Quasi-Experimental Design• Longitudinal Designs• Methods & Trade-offs• Activity: Build a Study
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Methods & Trade-offs
Which of the previously discussed research designs is the best?
Trade-offs
Mass Misconception
Discussion
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Overview
• Experimental Research• Correlational Designs• Surveys• Quasi-Experimental Design• Longitudinal Designs• Methods & Trade-offs• Activity: Build a Study
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Activity: Build a Study
Tasks Get into groups Answer the question, “Does
exercise improve mood?”
Instructions Design a correlational study to
address question. Design a quasi-experimental
study to address question. What materials will you need? What measures will you use? How much time will it take? How will data be collected? Discuss strengths, weaknesses,
and problems with each design.
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Photo Attribution
Slide 1Photo Credit: Jon Gosier https://www.flickr.com/photos/9834364@N08/6337674118/ https://creativecommons.org/licenses/by/2.0/
Slide 5Photo Credit: Linh H. Nguyen http://www.flickr.com/photos/22439010@N04/7864852790/ https://creativecommons.org/licenses/by-nc-nd/2.0/
Slide 13Photo Credit: Nina Matthews Photography http://www.flickr.com/photos/21560098@N06/5966651715/ https://creativecommons.org/licenses/by/2.0/
Slide 15Photo Credit: steinchen. http://pixabay.com/en/away-forest-path-autumn-landscape-204144/ http://creativecommons.org/publicdomain/zero/1.0/deed.en
Slide 17Photo Credit: Vox Efx http://www.flickr.com/photos/39096030@N00/3767822998/ https://creativecommons.org/licenses/by/2.0/
Slide 19Photo Credit: Rance Costa http://www.flickr.com/photos/36855865@N00/4253072108/ https://creativecommons.org/licenses/by/2.0/