Exploring the validity of data-gathering instruments.
The validity of an instrument is another important issue for the clinician to consider when selecting a tool for use in data collection. Broadly defined, validity refers to the extent to which an instrument measures what it is supposed to be measuring. Although validity is a unitary concept, this article explores three common categories of validity: content, criterion-related, and construct validity.
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D003625:Data Collection / Q000295:instrumentation* / Q000379:methods / Q000592:standards; D006801:Humans; D015203:Reproducibility of Results