After reading this chapter, you should be able to:
1 Delineate the within-subjects design and the within-subjects experimental design.
2 Explain why it is important to control for time-related factors using a within-subjects experimental design.
3 Demonstrate the use of counterbalancing and control for timing using a within-subjects experimental design.
4 Identify three sources of variation and explain why one source is removed using the within-subjects design.
5 Identify the appropriate sampling method and test statistic for related samples to compare differences between two group means.
6 Identify the appropriate sampling method and test statistic for related samples to compare differences among two or more group means.
7 Apply a Solomon four-group design for the within-subjects experimental design.
8 Contrast the use of a between-subjects versus a within-subjects design for an experiment.
9 Compute a related-samples t test and a one-way within-subjects analysis of variance using SPSS.