PRC Survey Reliability

Close-up of person marking on a piece of wood a measurement indicated by a ruler

Reliability is the degree to which a measure will produce the same result every time. A ruler is inflexible; its demarcations do not vary. When we use it to measure a block of wood, for example, it produces the same result every time. Likewise, a good survey question should produce the same response from a respondent each time it is asked.