![]() Predictive validity: the test’s ability to predict something (e.g., a future outcome) theoretically related to the construct being measured. Validity: the extent to which the test measure what it is intended to measure (as measured by correlation or relationship with another measure)Ĭonvergent validity: correlation with another measure that is designed to test the same constructĭivergent validity: correlation (or lack thereof) with another measure designed to test a different construct Measured using either (a) kappa for categorical data or (b) interclass correlations (ICC) for numerical data. Tests how consistent data are between different raters. Interrater reliability: Measures reliability across raters. Tests whether data are consistent over time. Test-retest reliability: Measures reliability over time. ![]() Tests whether all items are measuring the same thing. Internal consistency: Measures reliability across items. ![]() b) Compare the reporting between a peerreviewed journal article and a scientific article published in popular media. Reliability: consistency or dependability of the data Important note: Access information regarding validity, reliability and accuracy of secondary sources on Canvas in Module 7 (Second Hand Investigations Validity, reliability and accuracy).
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