Examlex
The Supreme Court has defined the scope of the Commerce Clause narrowly and,therefore,has restricted the powers of the federal government to regulate business.
Random Assignment
A technique used in research to place participants into experimental groups in a way that each participant has an equal chance of being in any group, ensuring the groups are comparable.
Face Validity
The extent to which a test appears to measure what it is supposed to measure, based on a subjective judgment and general impressions.
Content Validity
The extent to which a test measures all aspects of the concept it intends to assess.
Criterion Validity
An attribute of a test, when it gives higher scores to people already known to have greater ability in the area it tests. The concept arises because some qualities are easier to recognize than to define completely, such as artistic ability.
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