Morling Chapter 12

Question 1

Interaction effects

Answer 1

Whether the effect of the original independent variable depends on the level of another variable

Question 2

Factorial design

Answer 2

Two or more independent variables (factors)

Question 3

Participant variable

Answer 3

Variable whose levels are selected , not manipulated (like age, gender, ethnical etc)

Question 4

Moderator

Answer 4

A factor/variable that changes the relationship between two other variables

Question 5

Main-effect

Answer 5

The overall effect of one independent variable on the dependent variable, averaging over the levels of the other independent variable

Question 6

Marginal means

Answer 6

The arithmetic means for each level of an independent variable, averaging over levels of the other independent variable

Question 7

Statistically significant main effect

Answer 7

The difference between the marginal means computed with 95% interval. If it does not include 0 it is statistically significant.

Question 8

Mixed factorial design

Answer 8

One independent variable is manipulated as independent-groups and the other is manipulated as within-groups.