PSY 3213L Lecture Notes - Lecture 10: Pocket Cube, Extraversion And Introversion, Analysis Of Variance
12 Aug 2017
School
Department
Course
Professor
Document Summary
Increasing the number of levels of an independent variable: simple design has 2 levels of an iv, three levels or more of an iv can provide more information, positive monotonic relationship, effective to a point, then levels off. Simplest factorial design: 2x2 factorial design, has two iv, each independent variable has two levels, example. Iv: low or high exercise groups: dunn (2005, dv: standard depression measure, researchers wondered about frequency of exercising, so they added another iv. Frequency, 3 days a week or 5 days a week. Interpretation of factorial designs: main effect of an independent variable, design with two ivs is going to have two main effects. Interaction between the independent variables: the effect of one iv depends on the level of the other iv, does not occur in simple experimental designs. Iv x pv designs: experimental and nonexperimental variables.
