PSY 0160 Lecture Notes - Lecture 2: Nomothetic, Face Validity, Operationalization
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Gathered from someone other than the individual in question. Nomothetic: fixed or standardized, sat, relies on the (cid:448)alidity of the (cid:395)uestions (cid:894)not (cid:396)ele(cid:448)ant to (cid:449)hat it"s t(cid:396)ying to get at(cid:895) Idiographic: flexible, essays, capture the uniqueness of the individual. Face validity: when a test looks like it measures what it says it measures. But there have not been any psychometric tests to solidify its validity. Looks into the usefulness of a theoretical term. Predictive validity: whether a test predicts some sort of external criteria. Causality validity: do variations in one quality cause a certain outcome. Internal consistency: see if different items give similar results (do the items correlate with each other?) Split-half (odd & even): a way of doing internal consistency; take half of the test and compare it to the other half of the test. Alternate forms: different versions of the same exam. Practice effects (remember what was on the test before)
