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adjustment ANOVA appraisal effectiveness assessed attitudes average bias characteristics coefficients college quality concrete operational conservation of mass consumer context contrast effect convergent validity correlation delinquent behavior dependent variable drugs dummy variable durables economic employees ensemble equation estimates expected experiments factors focal forecast household impact income increase indicate interaction interview job perceptions lagged Lawler low-valid marijuana measures ment motivation new-design plants normal vote analysis ojon organization organizational parameters parents participative pattern percent performance appraisal period phlegm plans position predicted present problems Psychology quarter regression relationship reported response bias sample sampling errors scores self-reported seriation significant Social Social Psychology statistical stratum stress structure suggest survey symptoms Table target pairs theory tion transitory University of Michigan validity values variance