PSY 250 Lecture Notes - Lecture 8: Environmental Factor, Random Assignment, Repeated Measures Design
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Factorical matrix e. g, 2 x 3 factorial (2 ivs, one with 2 levels, other with 3, 2x3 = 6 total conditions) e. g. , 2 x 4 x 4 factorial (3 ivs, with 2, 4, & 4 levels, 32 total conditions) 2 x 2 (2 levels each types of training & presentation rate) Outcomes - main effects and interactions: main effects is there a significant effect of single iv made on dv. Overall effects of a single iv e. g. , main effects of type of training . Compares data in light-shaded cells (imagery) with data in dark-shaded cells (rote) Needs anova to make judgement about whether the diff are significant stat / due to chance. Result: imagery improves memory (row means): (20 > 15) Result: recall is higher if the words are presented at a slower rate (column means): (20. 5 > 14. 5: research ex. Control -> chose photos to avoid ceiling / floor effects.
