| factorial design | A design in which all levels of each independent variable are combined with all levels of the other independent variables. A factorial design allows investigation of the separate main effects and interactions of two or more independent variables.
|
 |
|
|
| interaction | The differing effect of one independent variable on the dependent variable, depending on the particular level of another independent variable.
|
|
|
|
| iV 3 PV design | A factorial design that includes both an experimental independent variable (IV) and a nonexperimental participant variable (PV).
|
|
|
|
| main effect | The direct effect of an independent variable on a dependent variable.
|
|
|
|
| mixed factorial design | A design that includes both independent groups (between-subjects) and repeated measures (within-subjects) variables.
|
|
|
|
| moderator variable | A variable that influences the nature of the relationship between two other variables (an independent variable and a dependent variable). In a factorial design, the effect of the moderator variable is revealed as an interaction.
|
|
|
|
| simple main effect | In a factorial design, the effect of one independent variable at a particular level of another independent variable.
|