Question 1

Studies that assign subjects to intervention groups on the basis of their extreme scores are vulnerable to regression toward the mean.​

Accepted Answer

A) True 
 B)False

Question 2

Professor Rose was asked to design an experiment to test whether obese people would lose weight on a new diet plan. Professor Rose is not a methodologist. She asked for your help: You immediately told her that the selected design would have to be sensitive to the issues of statistical regression, diffusion or imitation of treatment, compensatory rivalry, and demoralization. Professor Rose said, "I don't understand." Explain these issues to her.​

Accepted Answer

Statistical regression refers to the ten

Question 3

The Solomon four-group design:​

Accepted Answer

A)  ​combines the classical experimental design with the posttest-only control group design. 
B)  combines the classical experimental design with the pretest-only control group design.​ 
C)  ​combines the classical experimental design with the static-group comparison design. 
D)  ​combines the static-group comparison design with the one-group pretest-posttest design. 
A)  ​combines the classical experimental design with the posttest-only control group design. 
B)  combines the classical experimental design with the pretest-only control group design.​ 
C)  ​combines the classical experimental design with the static-group comparison design. 
D)  ​combines the static-group comparison design with the one-group pretest-posttest design.

Question 4

Attrition effects are automatically controlled when participants are assigned randomly to experimental and control groups.​

Accepted Answer

A) True 
 B)False

Question 5

Which of the following statement best describes the criteria for inferring or causality?​

Accepted Answer

A)  ​A relationship must exist between variables. 
B)  One variable must precede the other in time.​ 
C)  A third variable did not cause the changes observed in the first two variables.​ 
D)  A relationship must exist between two variables, with the cause preceding the effect in time, and the relationship cannot be explained away by the influence of a third variable.​ 
A)  ​A relationship must exist between variables. 
B)  One variable must precede the other in time.​ 
C)  A third variable did not cause the changes observed in the first two variables.​ 
D)  A relationship must exist between two variables, with the cause preceding the effect in time, and the relationship cannot be explained away by the influence of a third variable.​

Question 6

What differentiates experimental from pre-experimental designs? Give an illustration of a situation in which an experimental design would be preferred and one in which a pre-experimental design would be preferred.​

Accepted Answer

The answer of What differentiates experimental from pre-experimental designs? Give...

Question 7

The classical experiment with random assignment of participants controls for measurement bias.​

Accepted Answer

A) True 
 B)False

Question 8

Suppose a new social casework program is offered to students with high levels of truancy. If those students placed in the program by their families have significantly less truancy after participating than the students who did not participate in the program, then we can conclude that:​

Accepted Answer

A)  ​the program effectively reduces truancy. 
B)  a selection bias might explain away the difference.​ 
C)  causality cannot be inferred because of the lack of covariation.​ 
D)  some clients benefited, so the program has value.​ 
A)  ​the program effectively reduces truancy. 
B)  a selection bias might explain away the difference.​ 
C)  causality cannot be inferred because of the lack of covariation.​ 
D)  some clients benefited, so the program has value.​

Question 9

The effectiveness of randomization in experimentation is affected by the number of participants involved.​

Accepted Answer

A) True 
 B)False

Studies that assign subjects to intervention groups on the basis of their extreme scores are vulnerable to regression toward the mean.

The Solomon four-group design:

Attrition effects are automatically controlled when participants are assigned randomly to experimental and control groups.

Which of the following statement best describes the criteria for inferring or causality?

What differentiates experimental from pre-experimental designs? Give an illustration of a situation in which an experimental design would be preferred and one in which a pre-experimental design would be preferred.

The classical experiment with random assignment of participants controls for measurement bias.

Suppose a new social casework program is offered to students with high levels of truancy. If those students placed in the program by their families have significantly less truancy after participating than the students who did not participate in the program, then we can conclude that:

The effectiveness of randomization in experimentation is affected by the number of participants involved.

Why Study Research

Evidence-Based Practice

Factors Influencing the Research Process

Comparing Quantitative, Qualitative, and Mixed Methods of Inquiry

The Ethics and Politics of Social Work Research

Culturally Competent Research

Problem Formulation

Conceptualization in Quantitative and Qualitative Inquiry

Measurement

Constructing Measurement Instruments

Quasi-Experimental Designs

Single-Case Evaluation Designs

Program Evaluation

Sampling

Survey Research

Analyzing Existing Data: Quantitative and Qualitative Methods

Qualitative Research: General Principles

Qualitative Research: Specific Methods

Qualitative Data Analysis

Descriptive Data Analysis

Inferential Data Analysis

Writing Research Proposals and Reports

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Exam 11: Causal Inference and Experimental Designs

Studies that assign subjects to intervention groups on the basis of their extreme scores are vulnerable to regression toward the mean.​

The Solomon four-group design:​

Attrition effects are automatically controlled when participants are assigned randomly to experimental and control groups.​

Which of the following statement best describes the criteria for inferring or causality?​

What differentiates experimental from pre-experimental designs? Give an illustration of a situation in which an experimental design would be preferred and one in which a pre-experimental design would be preferred.​

The classical experiment with random assignment of participants controls for measurement bias.​

Suppose a new social casework program is offered to students with high levels of truancy. If those students placed in the program by their families have significantly less truancy after participating than the students who did not participate in the program, then we can conclude that:​

The effectiveness of randomization in experimentation is affected by the number of participants involved.​

Why Study Research

Evidence-Based Practice

Factors Influencing the Research Process

Comparing Quantitative, Qualitative, and Mixed Methods of Inquiry

The Ethics and Politics of Social Work Research

Culturally Competent Research

Problem Formulation

Conceptualization in Quantitative and Qualitative Inquiry

Measurement

Constructing Measurement Instruments

Quasi-Experimental Designs

Single-Case Evaluation Designs

Program Evaluation

Sampling

Survey Research

Analyzing Existing Data: Quantitative and Qualitative Methods

Qualitative Research: General Principles

Qualitative Research: Specific Methods

Qualitative Data Analysis

Descriptive Data Analysis

Inferential Data Analysis

Writing Research Proposals and Reports

Filters

Studies that assign subjects to intervention groups on the basis of their extreme scores are vulnerable to regression toward the mean.

The Solomon four-group design:

Attrition effects are automatically controlled when participants are assigned randomly to experimental and control groups.

Which of the following statement best describes the criteria for inferring or causality?

What differentiates experimental from pre-experimental designs? Give an illustration of a situation in which an experimental design would be preferred and one in which a pre-experimental design would be preferred.

The classical experiment with random assignment of participants controls for measurement bias.

Suppose a new social casework program is offered to students with high levels of truancy. If those students placed in the program by their families have significantly less truancy after participating than the students who did not participate in the program, then we can conclude that:

The effectiveness of randomization in experimentation is affected by the number of participants involved.