Exam 10: A: Within-Subjects Designs: Can Watching Reality Tv Shows Be Good for Us
Discuss a within-subjects research design,including that advantages associated with the design.
Within-subjects design uses the same participants within all conditions and therefore this reduces issues of individual differences among the different conditions.Within-subjects designs are practical for comparing two or more stimuli relative to one another,or studying changes in behavior or attitudes.Furthermore,within-subjects designs have a statistical power advantage over between-subjects designs.Fewer participants are needed for within-subjects designs.
Develop a study where a behavioral diary would be an appropriate method of data collection.
A behavioral diary is a self-report data collection strategy in which individuals record their behaviors and associated feelings concurrently in real-time.One idea for a potential study would be if researchers were examining eating disorders.Individuals struggling with eating disorders could monitor their thoughts,feelings,and associated behaviors regarding eating in their behavioral diary and use that for treatment planning and progress.
Describe when a t-test for dependent means would be appropriate and develop a simple experiment that would be appropriate for such a statistical test.
The t-test for dependent means,also known as the dependent means t-test,is appropriate when researchers want to determine if there is a statistically significant difference between two related sets of scores.An example study that would be appropriate for such a statistical analysis would include a pretest assessment of anxiety and posttest assessment of anxiety before and after studying for a final examination.The pretest and posttest assessments are dependent on one another since it is a single participant and neither are independent assessments.
Discuss the difference between a pretest-posttest design and a repeated-measures design.
Describe two order effects and how they may influence participant's data.
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