# Research Methods & Design: Chapter 11 Comprehension Quiz

Term
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________ in quasi-experimental designs is more difficult than in true experiments because quasi-experimental designs lack the important features of true experiments such as random assignment to conditions.

Applied settings
Statistical regression
Propensity score matching
Causal inference
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Terms in this set (20)
Why is the cross-sectional method more common than the longitudinal method?

The results are obtained relatively quickly and it is less expensive.

The differences among groups of different ages reflect developmental age changes.

The results observed are based on comparisons among different cohorts of individuals.

The developmental change is observed directly among the same group of people.
A quasi-experimental design attempts to

create natural conditions in the laboratory.

study the effect of an independent variable when the control features of true experimental designs cannot be achieved.

control all extraneous variables after subjects have been randomly assigned.

measure changes in the independent variable.
Which of the following is true of single-case designs?

Complex statistical analyses are not required.

The results are presented as group data with overall means.

Early interest in single-case designs in psychology came from research on classical conditioning.

The procedures for use with a single subject cannot be replicated with other subjects.
From an ethical viewpoint, the ABAB design is preferred over the ABA design because

the ABAB design is less expensive and less time-consuming.

a single reversal, in most cases, tends to be extremely powerful evidence for the effectiveness of the treatment.

it does not seem right to end the design with the withdrawal of a treatment that may be beneficial to the participant.

the ABAB design more powerfully rules out chance fluctuations and coincidental events.
A researcher wants to study the effect of weather on college students' study habits. On a sunny day, the researcher sits in the quad and records the number of minutes of study per student. Identify the crucial element missing in this design.

an independent variable
a control group
a dependent variable
an experimental group
Which of the following is true of a nonequivalent control group design?

The two groups in an experiment are the result of random assignment.

The problem of selection differences is likely to arise in this design.

The design does not include a separate control group.

The same group of people is observed at different points in time as they grow older.