Chapter 8 - Experimental Designs II: Factorial Designs

Question 1

Factorial Designs

Answer 1

Any experimental design with more than one independent variable.

Question 2

Factorial Matrix

Answer 2

A row and column arrangement that characterizes a factorial design and shows the independent variables, the levels of each independent variable, and the total number of conditions (cells) in the study.

Question 3

Main Effect

Answer 3

The presence or otherwise of statistically significant differences between the levels of an independent variable in a factorial design

Question 4

Interactions

Answer 4

In a factorial design, occurs when the effect of one independent variable depends on the level of another independent variable.

Question 5

Mixed-Factorial Designs

Answer 5

A factorial design with at least one between‐subjects factor and one within‐subjects factor.

Question 6

PxE Factorial Designs

Answer 6

A factorial design with at least one subject factor (P = person variable) and one manipulated factor (E = environmental variable)

Question 7

Mixed PxE Factorial Designs

Answer 7

A mixed design with at least one subject factor and one manipulated factor (Where E is Within Subject Design)

Question 8

ATI Factorial Designs

Answer 8

Aptitude by treatment interaction design; form of PxE factorial design found in educational research, the goal of which is to examine possible interactions between an aptitude variable (person factor) and a treatment variable (environmental factor).

Question 9

Simple Effect Analysis

Answer 9

Following an ANOVA, a follow‐up test to a significant interaction, comparing individual cells.