The reliability of a measured variable has two components, consistency and stability. Consistency is the degree to which two measures of the same concept provide the same assessment at the same time; consistency is based on...

The term reliability can be used to indicate a virtue in a person, a feature of scientific knowledge, or the quality of a product, process, or system. Personal unreliability makes an individual difficult to trust. Unreliability in science calls the...

A technical term which must be distinguished from validity. Reliability means the extent to which a test or an individual test item will give the same result on different occasions. For example, an individual test of intelligence should give the same...

The extent to which something is dependable, so that it is used in psychology in personality assessment and in statistics to record the consistency in the relationship between...

When applied to epidemiological studies refers to the degree to which they manage to produce consistent results. See also: SENSITIVITY;...

Processing the quality of being dependable; may refer to personnel, materials, and...

In general, reliability (systemic def.) is the ability of a person or system to perform and maintain its functions in routine circumstances, as well as hostile or unexpected circumstances. The IEEE defines it as ". . . the ability of a system or...