Chapter 12: More than once independent variable

Question 1

Factorial Design

Answer 1

A study in which there are two or more independent variables or factors.

Question 2

Cross-factorial design

Answer 2

Research cross the two independent variables and study each possible combination of the independent variables.
- 2 x2 factorial design means that two levels of one independent variable are cross with two levels of another independent variable

Question 3

Participant Variable

Answer 3

A variable such as age, gender, or ethnicity those levels are a selection (measured), not manipulated

Question 4

Main effect = overall effect

Answer 4

In a factorial design, the overall effect of one independent variable on the dependent variable, averaging over the levels o the other independent variable.
Think of the main effect as an overall effect, the overall effect of one independent variable at a time,

Question 5

Marginal means

Answer 5

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