Question 1

In a graph of experimental results, the presence of aninteraction is indicated by

Accepted Answer

An interaction in a graph is indicated by two lines that are not parallel to each other, showing that the effect of one variable depends on the level of another variable.

Question 2

If there is a caffeine and exercise interaction, which of thefollowing is not necessarily correct

Accepted Answer

An interaction between caffeine and exercise does not necessarily imply that there are main effects for both caffeine and exercise. Main effects refer to the independent impact of each factor, while an interaction indicates that the effect of one factor depends on the level of the other.

Question 3

One study tried to determine whether men prefer women who are blonde or women who are brunette. The hair color of the men also was varied. The experimenter found that both light and dark-haired men prefer blonde women to brunettes, but the effect was much greater for dark-haired men than for light-haired men. These results reflect

Accepted Answer

There is a main effect of women's hair color preference (blonde over brunette) and an interaction because the preference is stronger for dark-haired men than for light-haired men.

Question 4

Accepted Answer

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Question 5

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Question 6

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Question 7

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Question 8

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Question 9

The numbers (i.e., 2 x 6) included when identifyingfactorial designs stand for

Accepted Answer

In factorial designs, the numbers (e.g., 2 x 6) represent the number of levels of each independent variable (IV).

Question 10

A researcher is using 48 subjects in a 4 (levels of exercise) X 3 (levels of caffeine) between subjects factorial experiment. The degrees of freedom for the exercise by caffeine interaction is

Accepted Answer

The degrees of freedom for an interaction in a factorial design is calculated by multiplying the degrees of freedom for each factor. For exercise (4 levels), df = 4 - 1 = 3. For caffeine (3 levels), df = 3 - 1 = 2. Therefore, the interaction df = 3 * 2 = 6.

Question 11

A researcher is using 60 participants in a 2 (levels of exercise) X 2 (levels of caffeine) between subjects factorial experiment. The degrees of freedom for the exercise by caffeine interaction is

Accepted Answer

The degrees of freedom for an interaction in a 2x2 factorial design is calculated as (number of levels of factor A - 1) * (number of levels of factor B - 1). Here, (2-1)*(2-1) = 1.

Question 12

A researcher is using 60 participants in a 2 (levels of exercise) X 2 (levels of caffeine) between subjects factorial experiment. The degrees of freedom for the exercise main effect is

Accepted Answer

The degrees of freedom for a main effect in a factorial design is calculated as the number of levels of the factor minus one. For the exercise factor with 2 levels, the degrees of freedom is 2 - 1 = 1.

Question 13

A researcher is using 60 participants in a 2 (levels ofexercise) X 2 (levels of caffeine) between subjectsfactorial experiment. The total degrees of freedomfor the experiment is

Accepted Answer

The total degrees of freedom for the experiment is calculated as the total number of participants minus one, which is 60 - 1 = 59.

Question 14

Significant interactions usually

Accepted Answer

Significant interactions indicate that the effect of one independent variable depends on the level of another, which can limit the generalizations scientists can make because the effects are not consistent across all conditions.

Question 15

Which kind of interaction may reflect a problem with your dependent variable rather than the fact that the effect of one variable is affected by the presence of a second variable?

Accepted Answer

The answer of Which kind of interaction may reflect a...

Question 16

In which of the following situations would the researcher be most likely to hope for a statistically significant interaction?

Accepted Answer

In a moderating factor study, researchers are specifically interested in interactions because they want to see how the effect of one variable changes at different levels of another variable.

Question 17

Which of the following is true?

Accepted Answer

An ordinal interaction may not indicate a true psychological interaction, and some interactions can conceptually represent the main effect of similarity.

Question 18

A researcher wants to do a 2 (female/male) X 2 (no caffeine/ large amount of caffeine) study. Which of the following is true?

Accepted Answer

The researcher can make causal statements about caffeine if it's manipulated, but not about gender, which is a non-manipulable variable. The factorial design also allows for better generalizability than a simple experiment.

Question 19

Adding a nonexperimental factor to a simple experiment creates a 2 X 2 study that

Accepted Answer

Adding a nonexperimental factor can help assess the generalizability of the treatment's effect across different conditions, but it does not allow for causal conclusions about the nonexperimental factor itself.

Question 20

Factorial experiments permit you to look at the effects of more than one independent variable at a time.

Accepted Answer

Factorial experiments are designed to evaluate the effects of multiple independent variables simultaneously, as well as their interactions.

Quiz 12: Expanding the Simple Experiment: Factorial Designs

In a graph of experimental results, the presence of aninteraction is indicated by

If there is a caffeine and exercise interaction, which of thefollowing is not necessarily correct

The numbers (i.e., 2 x 6) included when identifyingfactorial designs stand for

A researcher is using 48 subjects in a 4 (levels of exercise) X 3 (levels of caffeine) between subjects factorial experiment. The degrees of freedom for the exercise by caffeine interaction is

A researcher is using 60 participants in a 2 (levels of exercise) X 2 (levels of caffeine) between subjects factorial experiment. The degrees of freedom for the exercise by caffeine interaction is

A researcher is using 60 participants in a 2 (levels of exercise) X 2 (levels of caffeine) between subjects factorial experiment. The degrees of freedom for the exercise main effect is

A researcher is using 60 participants in a 2 (levels ofexercise) X 2 (levels of caffeine) between subjectsfactorial experiment. The total degrees of freedomfor the experiment is

Significant interactions usually

Which kind of interaction may reflect a problem with your dependent variable rather than the fact that the effect of one variable is affected by the presence of a second variable?

In which of the following situations would the researcher be most likely to hope for a statistically significant interaction?

Which of the following is true?

A researcher wants to do a 2 (female/male) X 2 (no caffeine/ large amount of caffeine) study. Which of the following is true?

Adding a nonexperimental factor to a simple experiment creates a 2 X 2 study that

Factorial experiments permit you to look at the effects of more than one independent variable at a time.