PSYCH 301 Chapter Notes - Chapter 3: Inter-Rater Reliability, Concurrent Validity, Discriminant Validity
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Operational de nition: procedure for indirectly measuring a variable that cannot be observed or measured directly: beauty, hunger, pain. Nominal scale: type of measurement in which the categories represent qualitative differences in the variables being measured. Ratio scale: type of continuous measurement in which there is an absolute zero point. Construct: hypothetical attribute or mechanism that helps explain and predict behavior. Face validity: concern whether a measure super cially appears to measure what it claims to measure. Concurrent validity: ef cacy wherein scores from a measure are directly related to scores from an established measure. Predictive validity: ef cacy wherein scores obtained from a measure accurately prod behavior according to a theory. Construct validity: ef cacy wherein scores obtained from a measure behaves exactly the same as the variable itself. Convergent validity: ef cacy wherein a relationship between scores obtained from two different measures of the same construct.
