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  • Print publication year: 2020
  • Online publication date: May 2020

Chapter 5 - Reliability and Measurement Error


A test should give the same or similar results when administered repeatedly to the same individual within a time too short for real biological variation to take place. Results should be consistent whether the test is repeated by the same observer or instrument or by different observers or instruments. This desirable characteristic of a test is called “reliability” or “reproducibility.”