1 Way Repeated Measures Anova

Question 1

Within participants variance

Answer 1

Participant mean

Calculate difference between conditions

Not having to take individual differences into account reduces amount of error or unsystematic variance

Question 2

F ratio

Answer 2

F = treatment effect + error / error

If F greater than 1= some of variance is systematic (due to treatment effect

If F smaller than 1= none of the variance is systematic

Question 3

Partial eta squared

Answer 3

Same as independent measures anova

Question 4

Assumptions of a 1 way repeated measures anova

Answer 4

Continuous dependent variable (DV)

Normal distribution

No outliers

Equal sphericity

Question 5

Mauchlys rest of sphericity

Answer 5

Significant outcome = sphericity differs significantly between conditions -> assumption of sphericity not met

Greenhouse-Geisser correction should be used- row down in results

Reporting output when mauchlys test is significant and assumption of sphericity is violated

Question 6

Post hoc if significant

Answer 6

Report results in same way as independent measures