Question 1

The presence of a crossover effect in one's data can usually rule out the influence of which rival hypothesis?

Accepted Answer

A)  history 
B)  regression-artifact 
C)  local history 
D)  attrition 
A)  history 
B)  regression-artifact 
C)  local history 
D)  attrition

Question 2

Which of the following designs is the "best" in terms of eliminating potential confounds?

Accepted Answer

A)  nonequivalent comparison group 
B)  posttest-only design with nonequivalent groups 
C)  pretest-posttest control-group design 
D)  interrupted time series design 
A)  nonequivalent comparison group 
B)  posttest-only design with nonequivalent groups 
C)  pretest-posttest control-group design 
D)  interrupted time series design

Question 3

Imagine a hypothetical study using a nonequivalent comparison group designed to assess the effectiveness of an anti-drug, "Just Say No," campaign. In this study students at school X receive a semester-long series of "Just Say No" lectures. Students at school Y across town do not receive the intervention. Unfortunately, during the semester a student at school Y died after an accidental drug overdose. This incident may have influenced drug use at school Y but not school X) and consequently make it impossible to interpret our research findings. Which of the following threats to internal validity is present in this study?

Accepted Answer

A)  selection-instrumentation 
B)  selection-maturation 
C)  selection-history 
D)  selection-testing 
A)  selection-instrumentation 
B)  selection-maturation 
C)  selection-history 
D)  selection-testing

Question 4

Which of the following is NOT one of the requirements of the regression-discontinuity design.

Accepted Answer

A)  group assignment must be based on a cutoff score 
B)  the cutoff score should be located at one of the extreme ends of the distribution 
C)  the experimenter must control the assignment of participants to groups 
D)  all participants must be from the same population 
A)  group assignment must be based on a cutoff score 
B)  the cutoff score should be located at one of the extreme ends of the distribution 
C)  the experimenter must control the assignment of participants to groups 
D)  all participants must be from the same population

Question 5

The most common of the quasi experimental designs is the nonequivalent comparison group design. What is the dependent variable most commonly used in this design?

Accepted Answer

A)  latency measure 
B)  difference or change scores posttest - pretest) 
C)  number or percent correct 
D)  total correct 
A)  latency measure 
B)  difference or change scores posttest - pretest) 
C)  number or percent correct 
D)  total correct

Question 6

The nonequivalent comparison-group design does NOT have which of the following?

Accepted Answer

A)  Manipulation of the independent variable 
B)  Random assignment of participants to the groups 
C)  A pretest 
D)  A posttest 
A)  Manipulation of the independent variable 
B)  Random assignment of participants to the groups 
C)  A pretest 
D)  A posttest

Question 7

If you have conducted a study using the regression-discontinuity design, how would you tell if your treatment had an effect?

Accepted Answer

A)  by looking at the data to see if the regression line of the posttest scores differs from the regression line of pretest scores. 
B)  by statistically analyzing the data using Analysis of Variance. 
C)  by comparing the pretest scores with the posttest scores to see if there was a significant change. 
D)  by determining if there is a discontinuity in the regression line for the people above and below the cutoff score. 
A)  by looking at the data to see if the regression line of the posttest scores differs from the regression line of pretest scores. 
B)  by statistically analyzing the data using Analysis of Variance. 
C)  by comparing the pretest scores with the posttest scores to see if there was a significant change. 
D)  by determining if there is a discontinuity in the regression line for the people above and below the cutoff score.

Question 8

Sometimes it is difficult if not impossible to find a control group that is sufficiently comparable to an experimental group to allow for a traditional two-group experimental design. In these cases, one may want to use a time-series design

Accepted Answer

A)  which is a quasi-experimental design involving multiple measures of the dependent variable on a single group, both before and after treatment. 
B)  which is a strong experimental design involving multiple measures of the dependent variable on a single group, both before and after treatment. 
C)  which is an experimental design using multiple dependent measures on the experimental group, then taking measures on control participants over time, as he or she can find them. 
D)  staggers the time of presentation of the independent variable across participants. 
A)  which is a quasi-experimental design involving multiple measures of the dependent variable on a single group, both before and after treatment. 
B)  which is a strong experimental design involving multiple measures of the dependent variable on a single group, both before and after treatment. 
C)  which is an experimental design using multiple dependent measures on the experimental group, then taking measures on control participants over time, as he or she can find them. 
D)  staggers the time of presentation of the independent variable across participants.

Question 9

The selection-history effect is particularly a problem in which quasi-experimental design?

Accepted Answer

A)  non-equivalent comparison group 
B)  time series 
C)  interrupted time series 
D)  regression discontinuity 
A)  non-equivalent comparison group 
B)  time series 
C)  interrupted time series 
D)  regression discontinuity

The presence of a crossover effect in one's data can usually rule out the influence of which rival hypothesis?

Which of the following designs is the "best" in terms of eliminating potential confounds?

Which of the following is NOT one of the requirements of the regression-discontinuity design.

The most common of the quasi experimental designs is the nonequivalent comparison group design. What is the dependent variable most commonly used in this design?

The nonequivalent comparison-group design does NOT have which of the following?

If you have conducted a study using the regression-discontinuity design, how would you tell if your treatment had an effect?

Sometimes it is difficult if not impossible to find a control group that is sufficiently comparable to an experimental group to allow for a traditional two-group experimental design. In these cases, one may want to use a time-series design

The selection-history effect is particularly a problem in which quasi-experimental design?

Introduction to Scientific Research

Research Approaches and Methods of Data Collection

Problem Identification and Hypothesis Formation

Ethics

Measuring Variables and Sampling

Research Validity

Control Techniques in Experimental Research

Experimental Research Design

Procedure for Conducting an Experiment

Single-Case Research Designs

Survey Research

Qualitative and Mixed Methods Research

Descriptive Statistics

Inferential Statistics

Preparing the Research Report for Presentation or Publication

Filters

Exam 10: Quasi-Experimental Designs

The presence of a crossover effect in one's data can usually rule out the influence of which rival hypothesis?

Which of the following designs is the "best" in terms of eliminating potential confounds?

Which of the following is NOT one of the requirements of the regression-discontinuity design.

The most common of the quasi experimental designs is the nonequivalent comparison group design. What is the dependent variable most commonly used in this design?

The nonequivalent comparison-group design does NOT have which of the following?

If you have conducted a study using the regression-discontinuity design, how would you tell if your treatment had an effect?

Sometimes it is difficult if not impossible to find a control group that is sufficiently comparable to an experimental group to allow for a traditional two-group experimental design. In these cases, one may want to use a time-series design

The selection-history effect is particularly a problem in which quasi-experimental design?

Introduction to Scientific Research

Research Approaches and Methods of Data Collection

Problem Identification and Hypothesis Formation

Ethics

Measuring Variables and Sampling

Research Validity

Control Techniques in Experimental Research

Experimental Research Design

Procedure for Conducting an Experiment

Single-Case Research Designs

Survey Research

Qualitative and Mixed Methods Research

Descriptive Statistics

Inferential Statistics

Preparing the Research Report for Presentation or Publication

Filters