PSYB01H3 Lecture Notes - Lecture 4: Attention Deficit Hyperactivity Disorder, Face Validity, Inter-Rater Reliability
Document Summary
Define reliability of a measure of behavior and describe the difference between test-retest, internal consistency, and interrater reliability. Discuss ways to establish construct validity, including predictive validity, concurrent validity, convergent validity, and discriminant validity. Describe the problem of reactivity of a measure of behavior and discuss ways to minimize reactivity. Describe the properties of the four scales of measurement: nominal, ordinal, interval, and ratio. Consistency or stability of a measure of behavior. Proportion of true scores in a measure. But characteristic of a measure taken across individuals. Don"t know true scores, so can"t calculate reliability of true scores must estimate. Assume measured scores (x) related to each other to the degree that they share true scores. Estimate of reliability=correlation between two scores of the same measure. Correlation coefficients called regression coefficients (reliability coeffiecient) used for ratio and interval scales. Coefficients range from 0. 00 to - 1. 00 and 0. 00 to +1. 00. Will always range between 0 & 1.
