Question 1

Explain the elements of the class experimental design.Is this design especially useful in dealing with causal relationships? If yes,why? If not,why?

Accepted Answer

Experimental design involves several key

Question 2

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

Accepted Answer

A) True 
 B)False

Question 3

Whenever two variables are correlated,we may assume that one is the cause of the other.

Accepted Answer

A) True 
 B)False

Question 4

Quasi-experiments using nonequivalent comparison groups without random assignment can be credible,assuming that the comparability of the experimental and comparison groups is plausible-especially if the researcher provides substantial evidence of that comparability.

Accepted Answer

A) True 
 B)False

Question 5

For a causal relationship to exist there must be evidence

Accepted Answer

A) of a relationship between variables. 
B) that one variable precedes the other in time. 
C) that a third variable did not cause the changes observed in the first two variables. 
D) all of these. 
A) of a relationship between variables. 
B) that one variable precedes the other in time. 
C) that a third variable did not cause the changes observed in the first two variables. 
D) all of these.

Question 6

Discuss the advantages and disadvantages of cross-sectional studies and the case control design.

Accepted Answer

Cross-sectional studies and case control

Question 7

The classic experiment with random assignment of participants controls for:

Accepted Answer

A) research reactivity 
B) measurement bias 
C) diffusion or imitation of treatments 
D) compensatory equalization and rivalry 
E) resentful demoralization 
F)all of these
G)none of these 
A) research reactivity 
B) measurement bias 
C) diffusion or imitation of treatments 
D) compensatory equalization and rivalry 
E) resentful demoralization 
F)all of these
G)none of these

Question 8

A school social worker administered a self-esteem test to a group of 9th graders in September.During the school year the students received intensive social work intervention designed to improve their self-esteem.In May the self-esteem test was given again and the self-esteem scores improved.A major problem in this research is that the researcher failed to control for

Accepted Answer

A) history. 
B) maturation. 
C) testing. 
D) selection biases. 
E) all of these. 
A) history. 
B) maturation. 
C) testing. 
D) selection biases. 
E) all of these.

Question 9

A friend of yours,a senior,took the Graduate Record Exam in September and scored in the 99th percentile.In February your friend took the same exam over again.This time your friend scored in the 84th percentile.As a research methodology student,you told your friend that his/her lowered score was probably due to

Accepted Answer

A) testing. 
B) history. 
C) statistical regression. 
D) demoralization. 
E) compensation rivalry. 
A) testing. 
B) history. 
C) statistical regression. 
D) demoralization. 
E) compensation rivalry.

Question 10

Random assignment to experimental and control groups controls for research reactivity.

Accepted Answer

A) True 
 B)False

Question 11

An instrumentation effect occurs when

Accepted Answer

A) the instrument employed for the pretest has an effect that shows up on the posttest. 
B) the measurement instrument is changed from the pretest to the posttest. 
C) there is a change on the dependent variable from the pretest score to the posttest score. 
D) all of these. 
A) the instrument employed for the pretest has an effect that shows up on the posttest. 
B) the measurement instrument is changed from the pretest to the posttest. 
C) there is a change on the dependent variable from the pretest score to the posttest score. 
D) all of these.

Question 12

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 acceptable.

Accepted Answer

Experimental designs and pre-experimenta

Question 13

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 14

The problem of an interaction between the testing and the experimental stimulus is handled by

Accepted Answer

A) the Solomon four-group design. 
B) quasi-experimental designs. 
C) the classical experimental design 
D) all of these. 
A) the Solomon four-group design. 
B) quasi-experimental designs. 
C) the classical experimental design 
D) all of these.

Question 15

Case-control designs have more controls for threats to validity than do most other designs for evaluating programs or practice.

Accepted Answer

A) True 
 B)False

Question 16

The problem of external validity refers to the generalizability of results.

Accepted Answer

A) True 
 B)False

Question 17

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

Accepted Answer

A) True 
 B)False

Question 18

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

Accepted Answer

Statistical regression refers to the ten

Explain the elements of the class experimental design.Is this design especially useful in dealing with causal relationships? If yes,why? If not,why?

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

Whenever two variables are correlated,we may assume that one is the cause of the other.

Quasi-experiments using nonequivalent comparison groups without random assignment can be credible,assuming that the comparability of the experimental and comparison groups is plausible-especially if the researcher provides substantial evidence of that comparability.

For a causal relationship to exist there must be evidence

Discuss the advantages and disadvantages of cross-sectional studies and the case control design.

The classic experiment with random assignment of participants controls for:

Random assignment to experimental and control groups controls for research reactivity.

An instrumentation effect occurs when

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 acceptable.

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

The problem of an interaction between the testing and the experimental stimulus is handled by

Case-control designs have more controls for threats to validity than do most other designs for evaluating programs or practice.

The problem of external validity refers to the generalizability of results.

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

Why Study Research?

Evidence-Based Practice: The Research Process

Quantitative, Qualitative, and Mixed Methods of Inquiry

Factors Influencing the Research Process

Ethical Issues in Social Work Research

Culturally Competent Research

Problem Formulation

Measurement in Quantitative and Qualitative Inquiry

Quantitative and Qualitative Measurement Instruments

Surveys

Sampling: Quantitative and Qualitative Approaches

Single Case Evaluation Designs

Program Evaluation

Additional Methods in Qualitative Inquiry

Analyzing Available Records: Quantitative and Qualitative Methods

Quantitative Data Analysis

Qualitative Data Analysis

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Exam 12: Experiments and Quasi-Experiments

Explain the elements of the class experimental design.Is this design especially useful in dealing with causal relationships? If yes,why? If not,why?

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

Whenever two variables are correlated,we may assume that one is the cause of the other.

Quasi-experiments using nonequivalent comparison groups without random assignment can be credible,assuming that the comparability of the experimental and comparison groups is plausible-especially if the researcher provides substantial evidence of that comparability.

For a causal relationship to exist there must be evidence

Discuss the advantages and disadvantages of cross-sectional studies and the case control design.

The classic experiment with random assignment of participants controls for:

Random assignment to experimental and control groups controls for research reactivity.

An instrumentation effect occurs when

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 acceptable.

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

The problem of an interaction between the testing and the experimental stimulus is handled by

Case-control designs have more controls for threats to validity than do most other designs for evaluating programs or practice.

The problem of external validity refers to the generalizability of results.

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

Why Study Research?

Evidence-Based Practice: The Research Process

Quantitative, Qualitative, and Mixed Methods of Inquiry

Factors Influencing the Research Process

Ethical Issues in Social Work Research

Culturally Competent Research

Problem Formulation

Measurement in Quantitative and Qualitative Inquiry

Quantitative and Qualitative Measurement Instruments

Surveys

Sampling: Quantitative and Qualitative Approaches

Single Case Evaluation Designs

Program Evaluation

Additional Methods in Qualitative Inquiry

Analyzing Available Records: Quantitative and Qualitative Methods

Quantitative Data Analysis

Qualitative Data Analysis

Filters