PSY202H1 Chapter 14: PSY202 - Chapter 14 (Lecture 4-5)
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Psy202 chapter 14: two-factor anova (independent measure) (lecture 4 + 5) To observe how one variable interacts with another, it is necessary to study both variables simultaneously in one study. Single-factor research designs designs that included only one independent variable. Factorial design when a research study includes more than one factor. This chapter specifically focuses on two-factor, independent measures, equal n designs: this results in a 2 by 2 matrix with 4 different combinations of the variable (and four different conditions, e. g. The effect of the presence of an audience on people with high self-esteem and low self-esteem. In each case, numerator of f-ratio measures actual mean differences: denominator measures the differences to be expected with no treatment effect. Low self-esteem participants had an overall mean of m = 8 errors. High self-esteem participants had an overall mean of m = 4 errors. The difference between means constitute main effect for factor a" (or main effect for self-esteem)
