PSYCH 100B Lecture Notes - Lecture 2: Pepsi Challenge, F-Test, Analysis Of Variance
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January 29th (started by going over exam studying resources) Factorial designs are those that have at least two sources of effect . It"s often possible for these two sources to interact. This notation can accommodate as many ivs as needed. For example, a 2x2x3 is a study with three. Ivs, the first and second having two levels and the third having three levels: following this notation, one can multiply through to determine how many conditions exist in the study. Per the example in (3), there are 12 conditions. The example given was type of test and studying with/without music (dv is score on test). She drew some pictures representing four possible ways to manipulate between vs within: run the entire study as a within-subjects design; that is, every single participant gets all conditions. This is called a within-subjects factorial design: run the entire study as a between-subjects design; each participant only gets one condition.
