Research Methods, Statistics, and Applications
Multimedia and Web Resources
Click on the following links. Please note these will open in a new window.
Video Resource
Video 1: Between- and Within-Subjects Designs
Learning Objective: 11-1: About the two types of dependent designs--matched and repeated measures. | 11-2: To identify the advantages and drawbacks of dependent designs.
Description: Compares the characteristics of between-group experiments and within-subjects experiments (matched or repeated measures).
Web Resources
Web 1: Calculate Effect Size When Comparing Two Groups
Learning Objective: 11-4: How to compute the confidence interval and effect size for dependent t tests.
Description: An online calculator to compute Cohen’s d or rpb. If you choose to report a proportion of variance accounted for (rpb2) as the effect size, be sure the square the correlation that the calculator produces. For dependent samples, only use the first online calculator in which you input means and standard deviations.
Web 2: Interpret Results
Learning Objective: 11-3: How to compute and interpret dependent-groups t tests. | 11-4: How to compute the confidence interval and effect size for dependent t tests. | 11-5: How to compute and interpret dependent groups one-way ANOVAs.
Description: Provides visual explanations of how to interpret statistical significance and effect sizes. Also discusses practical significance.
Web 3: Cohen’s d Effect Size
Learning Objective: 11-4: How to compute the confidence interval and effect size for dependent t tests.
Description: An interactive visualization of Cohen’s d effect size.
Data sets
Practice calculating dependent-samples t tests and one-way within-samples ANOVAs with a data analysis program. Use any of the data sets available on the “Datasets” tab.