PSYCO212 Chapter 12: Chapter 12
19 Mar 2016
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No t e b o o k: research design. Factorial design: an experimental design with more than one iv. Crossed factorial design: a study in which researchers cross two or more independent variables, or factors, and study each possible combination of the levels of the variables. Nested factorial design: a study with more than one independent variable, in which levels of one independent variable are nested under, and unique to, the levels of another, higher-order independent variable. Running a factorial experiment is faster and more efficient than multiple separate experiments, and it allows you to investigate an interaction. Main effects: refers to the sole effect of one iv in a factorial design. Interaction: the joint, simultaneous effect on the dv of more than one iv. We find significant interactions when the effects of one iv change as the level of the other.
