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Social Differentiation—A New Psychological Barrier to Performance Appraisal

The modern literature on performance appraisal is full of warnings on the pitfalls, distortions, and obstacles existing in the use of methods based. on the trait approaches. Mcf'arland summarizes and classifies them in three main categories: psychological blocks, criteria problems and distortions. Under psychological blocks, Mcf'arland lists some of the psychological characteristics of the appraiser that may impede the appraisal process: