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Validity and Reliability
If you need information about the reliability and/or validity of a research instrument try searching a library database, Google Scholar, or Google, with the following search:
Instrument name AND (reliability OR validity)
Mini mental state examination AND (reliability OR validity)
You may need to try several databases to find your instrument, in general start with:
CINAHL for nursing/health care instruments
APA PsycINFO for psychologica/cognitive/behavioral instruments
ERIC for educational instruments.
Health Sciences LIbrarian