Quasi Experiments
A type of research design where behavior is measured both before and after a treatment or condition is implemented
What is a pre-test/post-test design?
Events that occur during the course of a study to all or individual participants that can result in bias
What are history effects?
What is a longitudinal design?
A pre-test/post-test design that contains a randomly assigned control group.
What is an experimental design?
When participants score higher or lower than their last score, making scores unreliable.
What is regression toward the mean?
A between subjects design in which age is treated as the independent variable.
What is a cross-sectional design?
A pre-test/post-test design where there are two experimental and control groups, one that takes the pre-test and one that does not take the pre-test.
What is the Solomon four-group design?
Natural changes that occur to the participants during the course of a study that can result in bias.
What is maturation?
A source of bias that occurs if a cross-sectional design is conducted.
What is a cohort/generation effect?
A pre-test/post-test design that compares a pattern of scores over time both before and after treatment.
What are time series designs?
When participants in a study drop out or fail to finish the experiment.
What is attrition or mortality?
Absent group means, researchers often present data for individual participants in this design.
What is a small-n design?
When a time series design includes a researcher implemented treatment.
What is a non-interrupted time series design?
The effect of administering levels of the independent variable in a fixed order such that the order of levels affects the DV.
What are testing effects?
ABA or ABAB designs.
What are designs that measure alternations between baseline and treatment?