Class notes mixed anova
5 important questions on Class notes mixed anova
When do you use a mixed design anova?
- When 1 independent variable uses the same participants
- and another independent variable uses different participants
What does an interaction effect mean, example women and men on aggression after coffee.
What are the assumptions of the mixed anova?
- Normality: scores on the dependent variable need to be normal per group
- level of measurement: categorical independent variables, and continuous dependent variables
- sphericity
- independence
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How to run a mixed anova in spss?
- Analyze; General Linear Models; Repeated Measures
- put the repeated independent factor in and name it condition
- put the between independent factor in and name it group or just name it
- define conditions
- model: full factorial
- options: main effects of all independent plus interaction
- if hypotheses: check contrasts and put repeated on this hypothised variable
- making plots is optional
With a mixed anova, what do you do when the assumption of sphericity is not met?
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