The attitudes of twenty-nine managers toward performance appraisal and towa
rd their organization were used to predict differences in mean ratings and
measures of discrimination among ratees and performance dimensions. Substan
tial multiple correlations were obtained for all three dependent variables
(between 32 and 46% of the variance in each measure was explained), and sev
eral individual correlations were statistically significant. Raters who sho
wed low levels of confidence in the appraisal system, high levels of discom
fort, or high levels of instrumental commitment were more likely to provide
ratings that were unusually high or that did not discriminate well among r
atees and/or dimensions. Raters who showed higher levels of attitudinal com
mitment or who perceived more risks associated with distorting ratings tend
ed to provide lower ratings and to discriminate among ratees and/or dimensi
ons.