Definition: The extent to which repeated measurements lead to the same results. In psychometrics, reliability refers to the extent to which respondents have similar scores when they take a questionnaire on multiple occasions. Noteworthy, reliability does not imply validity. Furthermore, additional types of reliability besides internal consistency exist, including: test-retest reliability, parallel forms reliability and interrater reliability.
References: Bollen (1989), & Drost (2011)
Drafted and Reviewed by: Annalise A. LaPlume, Mahmoud Elsherif, Eduardo Garcia-Garzon, Kai Krautter, Olmo van den Akker
Note that we are currently working on an automated mechanism to link references cited above with their full-length version that can be found at https://forrt.org/glossary/references with all references used so far.