Examlex
Identify the correct statement about letter reports.
Participant Expectancy
The phenomenon where a participant's expectations or beliefs influence or bias the outcome of an experiment.
Double-Blind
A type of study or clinical trial design in which neither the participants nor the experimenters know who is receiving a particular treatment, to prevent bias.
Correlation
A statistical measure that indicates the extent to which two or more variables fluctuate together.
Ex Post Facto
A research design that examines the effects of an independent variable on a dependent variable after the event has occurred.
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