11/4/2023 0 Comments Types of reliability and validity![]() When a measure is neither reliable nor valid, it represents a significant issue for any research or practical application, as it fails to provide consistent, accurate, or meaningful information. Such an instrument is generally considered to be of poor quality and is unlikely to provide useful or trustworthy data. When both reliability and validity are low for a particular measure or test, it means that the tool is neither consistent nor accurate in what it aims to measure. When a measure is reliable but not valid, it means that the instrument or test produces consistent results over time or across different settings, but those results are not an accurate reflection of the construct or variable it is supposed to measure. These will be described in more detail later to highlight the difference between the two terms. ![]() Attached you will find a graphic that shows you four possible outcomes. Reliability and validity are two important concepts in research and measurement.
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