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The molluscan shell does not contain the:
Construct Validity
The extent to which a test or instrument accurately measures the theoretical, non-observable constructs it is designed to assess.
Predictive Validity
The degree to which a measurement or test score forecasts future results on a connected outcome.
Concurrent Validity
A measure of how well a particular test predicts outcomes based on comparison with other measures that are administered at the same time.
Face Validity
The extent to which a test appears to measure what it is supposed to measure, based on an informal and subjective evaluation.
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