Question 1

Which of the following types of research are well suited for pre-experimental designs?

Accepted Answer

A)   investigatory
B)   reactionary
C)   explanatory
D)   exploratory

Question 2

Why is a cut-off score useful to researchers?

Accepted Answer

A)   It tells funding sources how many people they can cut from the research results.
B)   It caps the number of participants at 60.
C)   It keeps too many subjects from entering the research program.
D)   It allows them to categorize subjects.

Question 3

Why are experimental designs useful for informing social work practice?

Accepted Answer

A)   They offer new ideas.
B)   They establish causality.
C)   They directly raise money for social work education.
D)   They provide good jobs for researchers.

Question 4

The ______ focuses on assessing the difference between the means for the groups.

Accepted Answer

A)   z-test
B)   t-test
C)   x-test
D)   q-test

Question 5

In a posttest-only design with nonequivalent groups, the researcher measures the dependent variable after the intervention has been implemented for both groups.

Accepted Answer

A) True 
 B)False

Question 6

Collecting data prior to the intervention is called conducting a(n)  ______.

Accepted Answer

A)   posttest
B)   pretest
C)   observation
D)   pre-experiment

Question 7

Why are participants randomly assigned to research groups?

Accepted Answer

A)   to give participants equal chance at receiving the intervention
B)   some funding sources require this procedure
C)   to prevent participants from knowing others in their research group
D)   for the benefit of making it easier for researchers

Question 8

The research participants in a study using a pre-experimental design are usually selected via a purposeful sampling or ______ sampling strategy.

Accepted Answer

A)   predetermined
B)   convenience
C)   one-shot
D)   random

Question 9

If a researcher is not sure whether their intervention caused any change in the dependent variable, why is this a problem?

Accepted Answer

A)   The research must be flawed.
B)   It fails to establish internal validity.
C)   The researcher is bad at their job.
D)   Someone mixed up the research results and this costs money to fix.

Question 10

What letter is used to represent an independent variable?

Accepted Answer

A)   x
B)   y
C)   t
D)   l

Question 11

To establish a cause and effect relationship, the independent and dependent variables must be empirically ______.

Accepted Answer

A)   interdependent
B)   correlated
C)   opposite
D)   linked

Question 12

A(n)  ______ design is a research design where the researcher manipulates an independent (causal)  variable and observes changes in the dependent (outcome)  variable.

Accepted Answer

A)   pre-experimental
B)   experimental
C)   posttest
D)   control group

Question 13

Which of the following is the relationship between cause and effect?

Accepted Answer

A)   dependence
B)   causation
C)   extraneous relationship
D)   causality

Question 14

What letter is used to represent a dependent variable?

Accepted Answer

A)   x
B)   y
C)   t
D)   l

Question 15

How can the data from the posttest-only control group design be analyzed?

Accepted Answer

Answers should include using the two-sam...

Question 16

Posttest-only designs with nonequivalent groups are appropriate when people are naturally grouped.

Accepted Answer

A) True 
 B)False

Question 17

How does a researcher assess whether the intervention impacted the participants?

Accepted Answer

Answers should include the following: Th...

Question 18

Random assignment ensures that the groups are the same at the outset of the experiment.

Accepted Answer

A) True 
 B)False

Question 19

Having research participants in a comparison or control group where they are not receiving treatment is ______.

Accepted Answer

A)   unethical
B)   acceptable
C)   appropriate
D)   intentional

Question 20

When must a researcher collect data to determine whether the independent variable is associated with the dependent variable?

Accepted Answer

A)   before and after the intervention
B)   before and during the intervention
C)   during and after the intervention
D)   only after the intervention

Exam 6: Experimental Design

If a researcher is not sure whether their intervention caused any change in the dependent variable, why is this a problem?

Correct AnswerverifiedShow Answer

In a posttest-only design with nonequivalent groups, the researcher measures the dependent variable after the intervention has been implemented for both groups.

Correct AnswerverifiedShow Answer

A(n) ______ design is a research design where the researcher manipulates an independent (causal) variable and observes changes in the dependent (outcome) variable.

Correct AnswerverifiedShow Answer

How can the data from the posttest-only control group design be analyzed?

Correct AnswerverifiedAnswers should include using the two-sam...View AnswerShow Answer

Why are experimental designs useful for informing social work practice?

Correct AnswerverifiedShow Answer

Which of the following types of research are well suited for pre-experimental designs?

Correct AnswerverifiedShow Answer

What letter is used to represent a dependent variable?

Correct AnswerverifiedShow Answer

What letter is used to represent an independent variable?

Correct AnswerverifiedShow Answer

How does a researcher assess whether the intervention impacted the participants?

Correct AnswerverifiedAnswers should include the following: Th...View AnswerShow Answer

Random assignment ensures that the groups are the same at the outset of the experiment.

Correct AnswerverifiedShow Answer

Why is a cut-off score useful to researchers?

Correct AnswerverifiedShow Answer

Having research participants in a comparison or control group where they are not receiving treatment is ______.

Correct AnswerverifiedShow Answer

To establish a cause and effect relationship, the independent and dependent variables must be empirically ______.

Correct AnswerverifiedShow Answer

Collecting data prior to the intervention is called conducting a(n) ______.

Correct AnswerverifiedShow Answer

When must a researcher collect data to determine whether the independent variable is associated with the dependent variable?

Correct AnswerverifiedShow Answer

Why are participants randomly assigned to research groups?

Correct AnswerverifiedShow Answer

Which of the following is the relationship between cause and effect?

Correct AnswerverifiedShow Answer

Posttest-only designs with nonequivalent groups are appropriate when people are naturally grouped.

Correct AnswerverifiedShow Answer

The ______ focuses on assessing the difference between the means for the groups.

Correct AnswerverifiedShow Answer

The research participants in a study using a pre-experimental design are usually selected via a purposeful sampling or ______ sampling strategy.

Correct AnswerverifiedShow Answer

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Answers should include using the two-sam...
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Answers should include the following: Th...
View Answer

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