Chapter 11 - Factorial Designs

Question 1

When two or more independent variables are combined in a single study, the independent variables are commonly called…

Answer 1

Factors

Question 2

What is a factorial design?

Answer 2

A research study involving two or more factors

Question 3

How many different combinations and treatment conditions are going to be examine in a 2 x 2 matrix?

Answer 3

Four different combinations and 4 treatment conditions?

Question 4

A study with only one independent variable is often called…

Answer 4

single-factor design

Question 5

A study with two independent variables is often called a…

Answer 5

2 factor design

Question 6

2 x 3 x 2 design would represent a three-factor design with how many levels for each of the factors and how many total conditions?

Answer 6

-3 factors
- two, three, and two levels of each of the factors
- total of 12 conditions

Question 7

How many independent variables are there in a 2 x 2 x 2 factorial design?

Answer 7

3

Question 8

How many separate groups of participants would be needed for a between-subjects, two-factor study with three levels of factor A and four levels of factor B?

Answer 8

12

Question 9

A researcher who is examining the effects of temperature and humidity on the eating behavior of rats uses a factorial experiment comparing three different temperatures (70˚, 80˚, and 90˚) and two humidity conditions (low and high). How many factors are in the experiment?

Answer 9

2

Question 10

What is the main effect?

Answer 10

the mean differences among the levels of one factor

Question 11

How many effects would a 2-factor design have?

Answer 11

2 main effects–one for each factor

Question 12

What are the 6 different types of factorial designs?

Answer 12

1. Between-Subject
2. Within-Subject
3. Mixed Design: Between & Within
4. Experimental
5. Non-Experimental & Qausi-Experimental
6. Combined Strategy

Question 13

A factorial study measures allergy symptoms before and after taking medication for a group taking the real medication and a control group taking a placebo. What kind of design is being used?

Answer 13

Mixed Design

Question 14

The students in one gym class receive a self-esteem program as part of their sports training. To evaluate the program, a researcher measures self-esteem for the students before and after the program and compares their scores with those from another class that did not receive the program but was measured at the same two times. What kind of design is being used?

Answer 14

Mixed Design