Ch. 12

Question 1

What is a cell?

Answer 1

A condition in an experiment; in a simple experiment, a cell can represent the level of one independent variable; in a factorial design, a cell represents one of the possible combinations of two independent variables

Question 2

What is an interaction effect?

Answer 2

a result from a factorial design, in which the difference in the levels of one independent variable changes, depending on the level of the other independent variable; a difference in differences

Question 3

What is a factorial design?

Answer 3

a study in which there are two or more independent variables, or factors

Question 4

What is a participant variable?

Answer 4

a variable such as age, gender, or ethnicity whose levels are selected (measured) not manipulated

Question 5

What is a main effect?

Answer 5

In a factorial design, the overall effect of one independent variable on the dependent variable, averaging over the levels of the other independent variable

Question 6

What is the other marginal means?

Answer 6

In a factorial design, the arithmetic means for each level of an independent variable, averaging over the levels of another independent variable