Research Methods

Question 1 of 20

1

What is a main effect?

Select one of the following:

The effect of a dependent variable on an independent variable.
The effect of an independent variable on a dependent variable.
The effect of one independent variable on a dependent variable depending on the level of another independent variable.

Explanation

Question 2 of 20

1

What is a one-shot case study?

Select one of the following:

A pre-experimental design in which a group gets a pretest and a treatment, but no post-test.
An experimental design in which a group gets a treatment and a post-test, but no pretest.
A pre-experimental design in which a randomly assigned group gets a treatment and a post-test, but no pretest.
A pre-experimental design in which a group gets a treatment and a post-test, but no pretest.

Explanation

Question 3 of 20

1

Why is a pretest post-test control group design ideal?

Select one of the following:

Participants are randomly assigned to one of two groups: control or experimental.
A true comparison can be done with a post-test.
You can have more than one experimental group.
All of the above.

Explanation

Question 4 of 20

1

What is the coefficient of determination?

Select one of the following:

A number that signifies the strength in the relationship between two variables.
The amount of variance that is accounted for in one variable by the other variable.

Explanation

Question 5 of 20

1

How do you arrive at the coefficient of determination?

Select one of the following:

Square the r value.
Square the p value.

Explanation

Question 6 of 20

1

If you ended up with a coefficient of determination of .12, how would you interpret this number?

Select one of the following:

There is a small positive correlation between the two variables.
The dependent variable in your study only accounted for 12% of the variance in your independent variable.
The independent variable in your study only accounted for 12% of the variance in your dependent variable.
The independent variable in your study accounted for 88% of the variance in your dependent variable.

Explanation

Question 7 of 20

1

What is the coefficient of alienation?

Select one of the following:

The unexplained variance.
The amount of variance that is accounted for in one variable by the other variable.

Explanation

Question 8 of 20

1

When would you use a Spearman's correlation?

Select one of the following:

If one or more of your variables is normally distributed.
If one or more of your variables is not normally distributed.

Explanation

Question 9 of 20

1

What is an extraneous variable?

Select one of the following:

A variable other than the dependent variable that may influence the independent variable, which decreases internal validity.
A variable other than the dependent variable that may influence the independent variable, which increases internal validity.
A variable other than the independent variable that may influence the dependent variable, which decreases internal validity.
A variable other than the independent variable that may influence the dependent variable, which increases internal validity.

Explanation

Question 10 of 20

1

How would you control for extraneous variables?

Select one of the following:

Ignore unimportant variables or factors.
Employ three levels of randomization.
Match your samples and make sure they are as homogeneous as possible.
Run an analysis of covariance (ANCOVA) to statistically equalize your groups.
All of these answers are correct.

Explanation

Question 11 of 20

1

In a Solomon 4-group design, how many control groups are there?

Select one of the following:

1
2
3
0

Explanation

Question 12 of 20

1

In the Solomon 4-group design, how do Control Group 1 and Control Group 3 differ from one another?

Select one of the following:

Control Group 1 receives a pretest and treatment, but Control Group 3 only receives a pretest.
Control Group 1 receives a pretest and treatment, but Control Group 3 only receives the treatment.
Control Group 1 receives a pretest but no treatment; Control Group 3 only receives the treatment.
Control Group 1 receives a pretest but no treatment; Control Group 3 receives neither.

Explanation

Question 13 of 20

1

Why is it that the pretest is omitted in Control Groups 2 and 3 in a Solomon 4-group design?

Select one of the following:

Because the pretest may have an unintended consequence on behavior.
Because the pretest is only relevant in the experimental group.

Explanation

Question 14 of 20

1

What is a cross-sectional study?

Select one of the following:

A type of non-experimental research that examines several groups of people at one point in time.
A type of non-experimental research that examines one group of people at one point in time.
A type of non-experimental research that examines several groups of people at more than one point in time.
A type of non-experimental research that examines one group of people at more than one point in time.

Explanation

Question 15 of 20

1

Correlational research is non-experimental.

Select one of the following:

True
False

Explanation

Question 16 of 20

1

Cross-sectional, longitudinal, and follow-up studies are all considered what type of research?

Select one of the following:

Historical
Descriptive
Developmental
Correlational

Explanation

Question 17 of 20

1

What is a factorial design?

Select one of the following:

A design with only one independent variable.
A design with more than one independent variable.

Explanation

Question 18 of 20

1

If your factorial design looked like this - 2 x 2 x 2 - how many main effects would you have?

Select one of the following:

8
6
3

Explanation

Question 19 of 20

1

If your factorial design looked like this - 2 x 2 x 2 - how many interactions would you have?

Select one of the following:

3
6
8

Explanation

Question 20 of 20

1

In factorial designs, only main effects need to be tested for statistical significance by ANOVA.

Select one of the following:

True
False

	Created by Stephanie Walker about 9 years ago

Quiz on Research Methods, created by Stephanie Walker on 08/04/2015.

Research Methods

Question 1 of 20

What is a main effect?

Select one of the following:

Explanation

Question 2 of 20

What is a one-shot case study?

Select one of the following:

Explanation

Question 3 of 20

Why is a pretest post-test control group design ideal?

Select one of the following:

Explanation

Question 4 of 20

What is the coefficient of determination?

Select one of the following:

Explanation

Question 5 of 20

How do you arrive at the coefficient of determination?

Select one of the following:

Explanation

Question 6 of 20

If you ended up with a coefficient of determination of .12, how would you interpret this number?

Select one of the following:

Explanation

Question 7 of 20

What is the coefficient of alienation?

Select one of the following:

Explanation

Question 8 of 20

When would you use a Spearman's correlation?

Select one of the following:

Explanation

Question 9 of 20

What is an extraneous variable?

Select one of the following:

Explanation

Question 10 of 20

How would you control for extraneous variables?

Select one of the following:

Explanation

Question 11 of 20

In a Solomon 4-group design, how many control groups are there?

Select one of the following:

Explanation

Question 12 of 20

In the Solomon 4-group design, how do Control Group 1 and Control Group 3 differ from one another?

Select one of the following:

Explanation

Question 13 of 20

Why is it that the pretest is omitted in Control Groups 2 and 3 in a Solomon 4-group design?

Select one of the following:

Explanation

Question 14 of 20

What is a cross-sectional study?

Select one of the following:

Explanation

Question 15 of 20

Correlational research is non-experimental.

Select one of the following:

Explanation

Question 16 of 20

Cross-sectional, longitudinal, and follow-up studies are all considered what type of research?

Select one of the following:

Explanation

Question 17 of 20

What is a factorial design?

Select one of the following:

Explanation

Question 18 of 20

If your factorial design looked like this - 2 x 2 x 2 - how many main effects would you have?

Select one of the following:

Explanation

Question 19 of 20

If your factorial design looked like this - 2 x 2 x 2 - how many interactions would you have?

Select one of the following:

Explanation

Question 20 of 20

In factorial designs, only main effects need to be tested for statistical significance by ANOVA.