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State the different types of experimental designs
Independent groups
Matched pairs
Repeated measures
What is an experimental design?
The way in which participants are used in different conditions of the experiment
Independent groups design
Each participant performs one condition of the experiment
Repeated measures design
Each participant performs all conditions of the experiment
Matched pairs design
Participants are put into similar pairs and each participant performs one of the conditions
What are the problems with designs?
Demand characteristics
Individual differences
Number of participants
Order effects