Question 1

In a two-factor design,an interaction means that the effect of one factor depends on the levels of the second factor.

Accepted Answer

A) True 
 B)False

Question 2

A two-factor study compares three different treatment conditions (factor 1)for males and females (factor 2).In this study,the main effect for gender is determined by comparing the overall mean score for the males (averaged over the three treatments)and the corresponding overall mean score for the females (averaged over the three treatments).

Accepted Answer

A) True 
 B)False

Question 3

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

Accepted Answer

A) 2 
B) 3 
C) 4 
D) 8 
A) 2 
B) 3 
C) 4 
D) 8

Question 4

The following data represent the means for each treatment condition in a two factor experiment.Note that one mean is not given.What value for the missing mean would result in no main effect for factor B? B1 B2

Accepted Answer

A) 20 
B) 30 
C) 40 
D) 50 
A) 20 
B) 30 
C) 40 
D) 50

Question 5

The advantage of a two-factor design compared to two single-factor designs is the ability to

Accepted Answer

A) save time. 
B) evaluate the interaction between the independent variables. 
C) evaluate the main effects. 
D) check the manipulation. 
A) save time. 
B) evaluate the interaction between the independent variables. 
C) evaluate the main effects. 
D) check the manipulation.

Question 6

How many separate groups of participants would be needed for a between-subjects,two-factor study with 3 levels of factor A and 4 levels of factor B?

Accepted Answer

A) 3 
B) 4 
C) 7 
D) 12 
A) 3 
B) 4 
C) 7 
D) 12

Question 7

In an experiment examining the effects of task difficulty (easy/hard)for men and women,the factors are

Accepted Answer

A) male and female. 
B) easy and hard. 
C)  male,female,easy,and hard. 
D)  difficulty and gender. 
A) male and female. 
B) easy and hard. 
C)  male,female,easy,and hard. 
D)  difficulty and gender.

Question 8

Explain why the existence of an interaction limits the interpretation of the main effects in a two-factor study.

Accepted Answer

Txistence of an interaction means that t

Question 9

How many participants would be needed for a two-factor experiment with two levels of Factor A and three levels of Factor B if both factors are within subjects and there are five scores in each treatment condition?

Accepted Answer

A) 5 
B) 10 
C) 15 
D) 30 
A) 5 
B) 10 
C) 15 
D) 30

Question 10

In a two-factor design,there are two separate main effects.

Accepted Answer

A) True 
 B)False

Question 11

In a 2 x 2 between-subjects factorial experiment,there are a total of _______ treatment conditions in the experiment,and each participant serves in _______ condition(s).

Accepted Answer

A) 2,1 
B) 4,1 
C) 2,2 
D) 4,2 
A) 2,1 
B) 4,1 
C) 2,2 
D) 4,2

Question 12

An interaction between factors cannot occur unless

Accepted Answer

A) there is a main effect for at least one of the two factors. 
B) there is a main effect for both of the two factors. 
C) there is no main effect for either of the two factors. 
D) The existence of an interaction is independent of the main effects. 
A) there is a main effect for at least one of the two factors. 
B) there is a main effect for both of the two factors. 
C) there is no main effect for either of the two factors. 
D) The existence of an interaction is independent of the main effects.

Question 13

Which of the following is the correct description for a research study comparing problem solving ability for girls versus boys under three different levels of temperature?

Accepted Answer

A) 2 x 2 design 
B) 2 x 3 design 
C) 2 x 2 x 3 design 
D) none of the other options is an accurate description. 
A) 2 x 2 design 
B) 2 x 3 design 
C) 2 x 2 x 3 design 
D) none of the other options is an accurate description.

Question 14

The following data represent the means for each treatment condition in a two-factor experiment.What pattern of results is shown in the data? A1 A2

Accepted Answer

A) Main effects for both factors and an interaction. 
B) Main effects for both factors and no interaction. 
C) A main effect for factor A,no main effect for factor B,and no interaction. 
D) A main effect for factor A and an interaction but no main effect for factor B. 
A) Main effects for both factors and an interaction. 
B) Main effects for both factors and no interaction. 
C) A main effect for factor A,no main effect for factor B,and no interaction. 
D) A main effect for factor A and an interaction but no main effect for factor B.

Question 15

Describe two situations in which factorial designs are commonly used.

Accepted Answer

There are three specific uses of factori

Question 16

How many independent variables are there in an experimental two-factor design?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 17

For a two-factor design,describe what is meant by a "main effect" and an "interaction."

Accepted Answer

The overall mean differences among the l

Question 18

A factorial study that measures depression before and after treatment for a treatment group and a control group is an example of a _______.

Accepted Answer

A) between-subjects design 
B) within-subjects design 
C) repeated measures design 
D) mixed design 
A) between-subjects design 
B) within-subjects design 
C) repeated measures design 
D) mixed design

Question 19

Which of the following is a possible outcome from a 2*2 factorial design?

Accepted Answer

A) one main effect 
B) no main effects 
C) one interaction 
D) the other three choices are all possible to occur. 
A) one main effect 
B) no main effects 
C) one interaction 
D) the other three choices are all possible to occur.

Question 20

A two-factor experimental design must involve at least four different treatment conditions.

Accepted Answer

A) True 
 B)False

In a two-factor design,an interaction means that the effect of one factor depends on the levels of the second factor.

How many independent variables are there in a 222 factorial design?

The following data represent the means for each treatment condition in a two factor experiment.Note that one mean is not given.What value for the missing mean would result in no main effect for factor B? B1 B2

The advantage of a two-factor design compared to two single-factor designs is the ability to

How many separate groups of participants would be needed for a between-subjects,two-factor study with 3 levels of factor A and 4 levels of factor B?

In an experiment examining the effects of task difficulty (easy/hard)for men and women,the factors are

Explain why the existence of an interaction limits the interpretation of the main effects in a two-factor study.

How many participants would be needed for a two-factor experiment with two levels of Factor A and three levels of Factor B if both factors are within subjects and there are five scores in each treatment condition?

In a two-factor design,there are two separate main effects.

In a 2 x 2 between-subjects factorial experiment,there are a total of _ treatment conditions in the experiment,and each participant serves in _ condition(s).

An interaction between factors cannot occur unless

Which of the following is the correct description for a research study comparing problem solving ability for girls versus boys under three different levels of temperature?

The following data represent the means for each treatment condition in a two-factor experiment.What pattern of results is shown in the data? A1 A2

Describe two situations in which factorial designs are commonly used.

How many independent variables are there in an experimental two-factor design?

For a two-factor design,describe what is meant by a "main effect" and an "interaction."

A factorial study that measures depression before and after treatment for a treatment group and a control group is an example of a _______.

Which of the following is a possible outcome from a 2*2 factorial design?

A two-factor experimental design must involve at least four different treatment conditions.

Introduction, Acquiring Knowledge, and the Scientific Method

Research Ideas

Defining and Measuring Variables

Ethics in Research

Selecting Research Participants

Research Strategies and Validity

The Experimental Research Strategy

Experimental Designs: Between-Subjects Design

Experimental Designs: Within-Subjects Design

The Nonexperimental and Quasi-Experimental Strategies: Nonequivalent Group, Pre-Post, and Developmental Designs

The Correlational Research Strategy

Descriptive Research Strategy

Single-Subject Research Designs

Statistical Evaluation of Data

Writing a Research Report

Filters

Exam 11: Factorial Designs

In a two-factor design,an interaction means that the effect of one factor depends on the levels of the second factor.

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

The following data represent the means for each treatment condition in a two factor experiment.Note that one mean is not given.What value for the missing mean would result in no main effect for factor B? B1 B2

The advantage of a two-factor design compared to two single-factor designs is the ability to

How many separate groups of participants would be needed for a between-subjects,two-factor study with 3 levels of factor A and 4 levels of factor B?

In an experiment examining the effects of task difficulty (easy/hard)for men and women,the factors are

Explain why the existence of an interaction limits the interpretation of the main effects in a two-factor study.

How many participants would be needed for a two-factor experiment with two levels of Factor A and three levels of Factor B if both factors are within subjects and there are five scores in each treatment condition?

In a two-factor design,there are two separate main effects.

In a 2 x 2 between-subjects factorial experiment,there are a total of _______ treatment conditions in the experiment,and each participant serves in _______ condition(s).

An interaction between factors cannot occur unless

Which of the following is the correct description for a research study comparing problem solving ability for girls versus boys under three different levels of temperature?

The following data represent the means for each treatment condition in a two-factor experiment.What pattern of results is shown in the data? A1 A2

Describe two situations in which factorial designs are commonly used.

How many independent variables are there in an experimental two-factor design?

For a two-factor design,describe what is meant by a "main effect" and an "interaction."

A factorial study that measures depression before and after treatment for a treatment group and a control group is an example of a _______.

Which of the following is a possible outcome from a 2*2 factorial design?

A two-factor experimental design must involve at least four different treatment conditions.

Introduction, Acquiring Knowledge, and the Scientific Method

Research Ideas

Defining and Measuring Variables

Ethics in Research

Selecting Research Participants

Research Strategies and Validity

The Experimental Research Strategy

Experimental Designs: Between-Subjects Design

Experimental Designs: Within-Subjects Design

The Nonexperimental and Quasi-Experimental Strategies: Nonequivalent Group, Pre-Post, and Developmental Designs

The Correlational Research Strategy

Descriptive Research Strategy

Single-Subject Research Designs

Statistical Evaluation of Data

Writing a Research Report

Filters

How many independent variables are there in a 222 factorial design?

In a 2 x 2 between-subjects factorial experiment,there are a total of _ treatment conditions in the experiment,and each participant serves in _ condition(s).