Reliability and Validity Flashcards
validity
ability of an instrument to measure a concept accurately
reliability
ability of an instrument to measure a concept consistently
content validity
experts verify that measures strategy/instrument the intended concept
criterion-related validity
indicates how well the instrument measures the concept when compared to another established method for measuring the same concept
concurrent validity
measures the concept compared to measurement with an established instrument at the same time
predictive validity
measure the concept then measure concept again at a future time
construct validity
indicates how well an instrument measures a theory by testing the relationship between concepts in the theory
how is reliability reported as
reliability coefficient (0-1)
T/F: higher the reliability coefficient the more reliable
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research instrument reliability
0.7 or higher is considered reliable
clinical instrument reliability
0.9 or higher is considered reliable