The second type of reliability-related consistency is known as internal consistency and refers to the consistency in responding across similar items. Reliability as Consistency in Responding to Similar Questions If respondents are asked the same question at different time points and the correlation is 0.9, that would indicate temporal stability and reflects that the survey has good test-retest reliability. Reliability as Consistency in Responding Over TimeĬonsistency in responding across time, also known as test-retest reliability, is evaluated by observing the degree of association between responses at two different time points. Consistency in Responding to Similar Questions.Psychometrics literature outline two key types of reliability, each with a different kind of consistency in responses:
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