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In the coin test, how long is a coin placed on top of the unwrapped film?
Test-Retest Reliability
The consistency of an individual's score on the same test administered at two different times.
Validity
The extent to which a test, tool, or method accurately measures what it is intended to measure.
Parallel Forms Reliability
A measure of reliability used to assess the consistency of the results of two tests constructed in the same way from the same content domain.
Content Validity
The extent to which a test or measurement instrument covers the content that it is supposed to measure.
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