In an experiment the group of subjects that receives the treatment or experimental manipulation
What is Experimental Group
100
What is the most common feature of a before-and-after design?
What is The absence of a comparison group
100
Five basic sources of invalidity
What are Selection bias; Endogenous change; External events; Contamination; Treatment misidentification
100
When subjects are randomly assigned, then a researcher can assume that the only difference between the two groups is that the experimental group received the treatment. Why is this important?
What is It eliminates systematic bias
100
The control group is selected to be as comparable as possible to the treatment group
What is Nonequivalent Control Groups Designs
200
Research about social programs or interventions
What is Evaluation Research
200
What is the simplest type of before-and-after design?
What is Fixed-sample panel design
200
In this type of type of selection bias, Groups become different because for various reasons subjects are more likely to drop out of groups
What is Differential attrition
200
Random assignment can guarantee that the groups are perfectly identical at the start of the experiment. True or False?
What is False
200
The 2 selection methods that can be used in Nonequivalent Control Groups Designs
What are Individual Matching and Aggregate Matching
300
Exists when a conclusion based on a sample, or subset, of a larger population holds true for that population
What is Sample Generalizability
300
Why does a fixed-sample panel design not qualify as a quasi-experimental design?
What is Does not qualify as a quasi-experimental design because comparing subjects to themselves at only one earlier point in time fails to provide an adequate comparison group
300
What are the 3 major sources of Treatment mis-identification?
What are Expectancy of experimental staff; Placebo effect; Hawthorne effect
300
This is the most common way of carrying out random assignment and sampling
What is Flipping a coin
300
In this type of matching, researchers will be Using group level data, the experimental group is matched to a similar control group
What is Aggregate matching
400
The manipulation that exposes subjects in an experiment to a particular value of the independent variable
What is Treatment
400
The basis for comparison is provided by the pretreatment measures in the experimental group. True or False?
What is True
400
Occurs when natural developments in the subjects, independent of the experimental treatment, account for some or all of the observed changes between pre-test and post-test
What is Endogenous Change
400
What is another procedure sometimes used to equate experimental and comparison groups, but by itself, it is a poor substitute for randomization?
What is Matching
400
Individual cases in the treatment group are matched with similar individuals in the control group
What is Individual matching
500
Procedure by which each experimental and contral group are placed in a group randomly
What is Random Assignment
500
What are the 2 less common types of before-and-after designs?
What are Repeated measures panel design; Regression-discontinuity design
500
Endogenous Change includes 3 specific threats to internal validity. What are they?
What are Testing; Maturation; Regression
500
Define matching
What is A procedure for equating the characteristics if individuals in different comparison groups in an experiment
500
The 3 Types of Quasi-Experiments
What are Nonequivalent control group designs; Before-and-after designs; Ex post facto control group designs