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Scale Reliability and Validity - Coggle Diagram

- - - - Test-retest reliability is a measure of consistency between two
        measurements (tests) of the same construct administered to the same sample at two different points in time. If the observations have not changed substantially between the two tests, then the measure is reliable. The correlation in observations between the two tests is an estimate of test-retest reliability
        
        Split-half reliability is a measure of consistency between two halves of a construct measure.
        
        Internal consistency reliability is a measure of
        
        consistency between different items of the same construct. If a multiple-item construct
        
        measure is administered to respondents, the extent to which respondents rate those items in a
        
        similar manner is a reflection of internal consistency. This reliability can be estimated in terms
        
        of average inter-item correlation, average item-to-total correlation, or more commonly,
        
        Validity, often called construct validity, refers to the extent to which a measure
        adequately represents the underlying construct that it is supposed to measure.
        
        Face validity refers to whether an indicator seems to be a reasonable
        measure if its underlying construct on its face
        
        Content validity is an assessment of how well a set of scale items
        matches with the relevant content domain of the construct that it is trying to measure.
        
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