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Research Methods

Experimental designs

TermDefinitionStrengthsWeaknesses
Experimental designs Describes the way participants are allocated to experimental groups
Types of experimental designs Independent measures Repeated Measures Matched Pairs
Independent Measures Different participants in different conditions No demand characteristics No order effects More participants needed Individual differences
Repeated Measures Same participants in different conditions Fewer participants Control for individual differences Demand characteristics Order effects
Matched Pairs Different participants in different conditions but matched with some key factors No order effects No demand characteristics Control for individual differences Time consuming Difficult to match all variables
Control Something that is kept the same Used to make sure the experiment is reliable
Types of variables Extraneous variable Confounding variable
Extraneous variable Variable that may compete with the independent variable in explaining the outcome of the study
Confounding variable Variable associated with both variables
Created by: Elissah
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