PSY-35 Lecture Notes - Lecture 20: Concurrent Validity, Criterion Validity, Predictive Validity
Document Summary
Inter-rate reliability: measures the degree to which two independent observers or judges agree. Test-retest reliability: measures the extent to which people being observed twice or taking the same test twice, perhaps several or months apart score in generally the same way. This kind of reliability makes sense only when the theory assumes that people will not change appreciably between testings on the variable being measured. Alternate-form reliability: the extent to which scores on two forms of a test are consistent. To alleviate the fear that people may remember their answers from the rst test and aim to e consistent. Internal consistency reliability: the degree to which item on a test are related to one another. Reliability, a correlation, a measure of how closely two variables are related, is calculated between raters or sets of items. The higher the correlation, the higher the reliability. The extent to which a measure ful lls its intended purpose.
