| http://www.w3.org/ns/prov#value | - Ornstein describes a number of strengths of NRTs, including but not limited to the following: a) they assume statistical rigor in that they are reliable (i.e., dependable and stable) and valid (i.e., measure what they are reported to measure); b) the quality of test items is generally high in that they are developed by test experts, pilot tested, and undergo revision prior to publication and use;
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