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Anecdotal Evidence Results from situations that come in mind easily and is of little in scientific research.

Experiment Experimenter actively imposes treatment on the subject.

Treatment Variable effect that you study.

Random Assignment Preferred method of assigning subjects to treatments in an experiment.

Randomized Comparitive Experiment Each subject has an equal chance of being assigned to any of the treatment groups.

Placebo Receiving a non treatment and seeing its effects.

Placebo Effect Response to non-treatment in a medical study.

Blind Not known of being given the treatment.

Double Blind Both experimenter and subject do not know of the treatment.

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