The Repeated Measures ANOVA is similar to the One-Way ANOVA, but is used when comparing groups made up of the same people. In technical terms, each participant experiences each level of the independent variable, rather than a typical one-way ANOVA where each participant belongs to only one group.
Running One-Way ANOVA in SPSS
Interpreting the Output
Reporting Results in APA Style
A Repeated Measures ANOVA determined that word recall performance varied significantly across points in time (F(1.382, 21.813) = 25.21, p < .01). A post hoc analysis showed that while there was not a significant difference between recall performance at 12 hours (M = 32, SD = 8) and 24 hours (M = 28, SD = 7), recall performance at 48 hours (M = 12, SD = 3) was significantly lower than the previous checks.