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Party get-out-the-vote efforts are critical for overcoming
Face Validity
The extent to which a test appears to measure what it's supposed to measure, based on subjective judgment.
Content Validity
When the content of a test includes a representative sample of behaviours thought to be related to the construct (that is, the concept or entity) the test is designed to measure.
Representative Sample
A portion of the population that represents the entire group accurately.
Single-subject Design
A research design that focuses on the responses of a single participant to document the effectiveness of an intervention.
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