Week 6 Flashcards
(45 cards)
Uses random assignment, and experimental, a control group, pre-testing, and post-testing
Classic experimental design
A group in quasi-experimental designs that receives “treatment as usual” instead of no treatment
Comparison group
The group in an experiment that does not receive the intervention
Control group
A method f data collection designed to test hypotheses under controlled conditions
Experiment
The group in an experiment that receives the intervention
Experimental group
A measurement taken after the intervention
Post-test
A type of experimental design that uses random assignment, an experimental, a control group, and a post-test, but does not utilize a pre-test
Post-test only control group design
A measurement taken prior to the intervention
Pre-test
A random process to assign people into experimental and control groups
Random assignment
Uses random assignment, two experimental and two control groups, pre-tests for half of the groups, and post-tests for all
Solomon four-group design
When a participant’s scores on a measure change because they have already been exposed to it
Testing effects
A group of experimental designs that contain independent and dependent variables, pre-testing and post-testing, and experimental and control groups
True experiments
Groups that are similar across factors important for the study
Comparable groups
When the researchers who interact with participants are unaware of who is in the control group or the experimental group
Double-blind
The degree to which experimental conclusions generalize to larger populations and different situations
External validity
The confidence researchers have about whether their intervention produce variation in their dependent variable
Internal validity
When a participant feels better, despite having received no intervention at all
Placebo effect
Conducting another researcher’s experiment in the same manner and seeing if it produces the same results
Replication
When a researcher consciously or unconsciously influences assignment into experimental and control groups
Selection bias
When the comparison group and experimental group are determined to be similar along important variables
Aggregate matching
A control group created when a researcher matches individuals after the intervention is administered
Ex post facto control group
Pairing participants who have similar attributes for the purpose of group assignment
Individual matching
Situations in which comparable groups are created by differences that already occur in the real world
Natural experiments
A quasi-experimental design that is like a classic experimental design but does not use random assignment.
Nonequivalent comparison group design
