Repeated measures ANOVA

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Resource type: this resource contains a tutorial or tutorial notes.

Overview

The repeated measures design is also known as a within-subject design. In this design, participants may present scores for:

1. the same measure repeated over time (e.g., GPA in first, second, and third year), and/or
2. across more than one condition (e.g., experimental and control conditions), and/or
3. several related and comparable factors (e.g., sub-scales of an IQ test).

Assumptions

• Sphericity: Instead of the homogeneity of variance assumption (which is part of one-way (between-subjects) and factorial ANOVA designs, repeated-measures designs have the assumption of sphericity, tested by Mauchly's sphericity test.

See also

• Sphericity (Wikipedia)

External links

University of Canberra

• Repeated measures ANOVA (ucspace)
  • Repeated measures ANOVA Notes (Handout)

Other

• Chapter 14 Within-Subjects ANOVA (HyperStat Online)