Intraobserver reliability indicates how stable are responses obtained from the same respondent at different time points. The greater the difference between the responses, the smaller the intraobserver reliability of the survey instrument.
The correlation coefficient between the responses obtained at different time points from the same respondent is often used as a quantitative measure of the intraobserver reliability.
A related concept is Interobserver Reliability .
Related statistics.com courses:
Survey Design and Sampling Procedures
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