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Review From Exam 1
Experiments - General
Factorial Designs
Threats to Validity
Repeated Measures & Quasi-Experimental Designs
100
The factors experimenters manipulate to see if they affect the dependent variable
What is the independent variable?
100
Problem that random assignment eliminates
What is the individual difference problem?
100
A design with two factors
What is a two way design?
100
When the experimenter is aware of the study’s hypothesis and unknowingly influences the results to support the hypothesis.
What is experimenter bias?
100
A method for controlling order effects in a repeated measures design
What is counterbalancing?
200
Variables that characterize pre-existing differences among study participants
What are subject variables?
200
Group(s) that receives no treatment or the standard treatment
What is the control group.
200
The number of cells in a 2 x 2 x 2 x 2 x 2 design.
What is 32?
200
Events beyond our control occurring outside our study that could affect the results of our study
What is history?
200
The crucial difference between experimental and quasi-experimental.
What is random assignment?
300
Any subgroup of the population of interest
What is the sample?
300
The two elements required for a study to be considered an experiment
What are (1) manipulation and (2) random assignment.
300
The number of *possible* main effects in a 2 x 3 design.
What is 2?
300
Extreme scores tend to become less extreme when measured again
What is regression toward the mean?
300
Type of design that uses at least one between-subjects IV and one within-subjects IV
What is a mixed design?
400
Research technique that ensures that the groups we are comparing are equivalent in every possible way.
What is random assignment?
400
Type of realism where that involves the study looking like the real world
What is mundane realism?
400
The number of *possible* interactions in a 2 x 3 design.
What is 1?
400
Causes a progressive decline in performance from one test to the next
What is testing effects?
400
Design that involves manipulating one variable & measuring another.
What is a person by treatment quasi-experimental design?
500
How sure we are that changes in the IV caused changes in the DV.
What is internal validity
500
Something within the study that varies systematically with one level of the IV but not the other(s)
What is a confound?
500
When the effects of one IV depend on the levels of the other IV.
What is an interaction?
500
When the groups that we are comparing differ in some way (prior to the study) that could cause the difference in results.
What is selection of subjects?
500
Design that uses a group similar to the treatment group serves as a comparison group
What is a non-equivalent control group design?