chapter 11: true experiments pt. 2 (factorial designs)

hde 120

factorial design

research design that involves all combinations of at least two values of two or more independent variables

main effect

in a factorial experiment, the effect of one independent variable, averaged over all levels of another independent variable

interaction

when the effect of one independent variable depends on the level of another independent variable

antagonistic interaction

interaction in which the two independent variables tend to reverse each other’s effects

synergistic interaction

interaction in which two independent variables reinforce each other’s effects

ceiling-effect interaction

interaction in which one variable has a smaller effect when paired with higher levels of a second variable

mixed factorial designs

designs containing at least one variable that is presented in a within-subjects fashion and one other variable that is presented in a between-subjects fashion