Question 1

A 2x3 factorial design has six

Accepted Answer

B

Question 2

A 3x3x3 factorial design has

Accepted Answer

A 3x3x3 factorial design has three independent variables, each with three levels, resulting in 27 different conditions. This design also has the potential for three different main effects (one for each independent variable), making D the correct answer.

Question 3

In a study of cognitive mapping, all subjects point as accurately as they can to six different geographical targets. Half the subjects are aided by being told where true North is. The remaining subjects are not given the North orientation. Which of the following is true about this design?

Accepted Answer

A

Question 4

A 2x4 factorial design has

Accepted Answer

A 2x4 factorial design has two independent variables each with two levels, resulting in a total of eight different conditions. Therefore, D is the correct answer.

Question 5

In a single experiment, amount of reward and type of reward are varied. Subjects are randomly assigned to one of three "amount of reward" groups. Each subject is tested once with one type of reward and once again with a second type of reward. What type of design is this?

Accepted Answer

This design involves two independent variables - amount of reward (with three levels) and type of reward (with two levels) - making it a 2x3 mixed factorial design.

Question 6

A 2x2x4 factorial design

Accepted Answer

A 2x2x4 factorial design has three independent variables, each with two, two, and four levels respectively, resulting in a total of 16 different conditions. Therefore, option D is correct.

Question 7

In the study by Grant et al., subjects studied text materials either in a noisy or a quiet environment and also recalled the material either in a noisy or a quiet environment. What was true about this study?

Accepted Answer

The answer of In the study by Grant et al.,...

Question 8

In a 2x2 design, the following results occur:

Which of the following is true?

Accepted Answer

The answer of In a 2x2 design, the following results...

Question 9

In a 2 (gender) x 2 (type of therapy) factorial design, males were helped by therapy A, but females were helped by therapy B. This describes

Accepted Answer

The results indicate an interaction between gender and therapy type, as the effect of therapy type depends on the gender of the individual. There is no evidence of a main effect for either gender or therapy type, as the effect of each depends on the other variable.

Question 10

In a 2x2 design, the following results occur:

Which of the following is true?

Accepted Answer

The answer of In a 2x2 design, the following results...

Question 11

In a factorial study, what is a main effect?

Accepted Answer

A main effect refers to the overall effect of one independent variable on a dependent variable while ignoring the other independent variable(s). A main effect can be identified by comparing the means of the dependent variable across the different levels of the independent variable. Therefore, option B is the correct answer as it refers to a statistically significant difference between the levels of a single independent variable.

Question 12

All factorial designs

Accepted Answer

The answer of All factorial designs
...

Question 13

In a 2x2 design, the following results occur:

Which of the following is true?

Accepted Answer

In a 2x2 design, there are two main effects (one for each independent variable with two levels) and one interaction. The given results show a significant main effect for one variable and a significant interaction between the two variables. Therefore, the correct answer is D, which indicates that there are two main effects and an interaction.

Question 14

In a 2x2 design, the following results occur:

Which of the following is true?

Accepted Answer

The answer of In a 2x2 design, the following results...

Question 15

A 3x3x3 factorial design has three

Accepted Answer

The design has three independent variables, each with three levels/conditions, resulting in a three-way interaction. There is no indication of any dependent variables being measured.

Question 16

In a 2x2 design, the following results occur:

Which of the following is true?

Accepted Answer

The answer of In a 2x2 design, the following results...

Question 17

In the above study, suppose that 10 subjects are tested in condition represented by the upper left hand cell of the factorial matrix. How many subjects need to be recruited to complete the study?

Accepted Answer

The answer of In the above study, suppose that 10...

Question 18

A mixed factorial design has

Accepted Answer

A mixed factorial design has both between-subjects and within-subjects factors, meaning that some participants experience different conditions than others (between-subjects) while others experience different levels of the same condition (within-subjects). Choice B is incorrect because subject variables are not manipulated, and choice C is incorrect because having both genders does not define a mixed factorial design. Choice D is also incorrect because a design can have multiple levels without being mixed.

Question 19

All of the following are true about factorial designs except

Accepted Answer

Factorial designs are best analyzed with a factorial ANOVA, not a 1-factor ANOVA.

Question 20

In a factorial study, a main effect

Accepted Answer

A main effect occurs when there are differences found for the different levels of an independent variable. This is distinct from an interaction effect (choice C), which occurs when the effect of one independent variable depends on the level of another. Choice A is incorrect because not all significant F ratios in the ANOVA indicate a main effect. Choice D is incorrect because main effects are typically determined by calculating column means, not row means.

Quiz 8: Experimental Design II: Factorial Designs

A 2x3 factorial design has six

A 3x3x3 factorial design has

In a study of cognitive mapping, all subjects point as accurately as they can to six different geographical targets. Half the subjects are aided by being told where true North is. The remaining subjects are not given the North orientation. Which of the following is true about this design?

A 2x4 factorial design has

In a single experiment, amount of reward and type of reward are varied. Subjects are randomly assigned to one of three "amount of reward" groups. Each subject is tested once with one type of reward and once again with a second type of reward. What type of design is this?

A 2x2x4 factorial design

In the study by Grant et al., subjects studied text materials either in a noisy or a quiet environment and also recalled the material either in a noisy or a quiet environment. What was true about this study?

In a 2x2 design, the following results occur: Which of the following is true?

In a 2 (gender) x 2 (type of therapy) factorial design, males were helped by therapy A, but females were helped by therapy B. This describes

In a 2x2 design, the following results occur: Which of the following is true?

In a factorial study, what is a main effect?

All factorial designs

In a 2x2 design, the following results occur: Which of the following is true?

In a 2x2 design, the following results occur: Which of the following is true?

A 3x3x3 factorial design has three

In a 2x2 design, the following results occur: Which of the following is true?

In the above study, suppose that 10 subjects are tested in condition represented by the upper left hand cell of the factorial matrix. How many subjects need to be recruited to complete the study?

A mixed factorial design has

All of the following are true about factorial designs except

In a factorial study, a main effect