Context effects in performance appraisal: A methodological critique and empirical study.

The standard design used in research on assimilation and contrast effects in performance appraisal suffers from methodological flaws that preclude unambiguous interpretation of experimental results. This standard design is compared with two other designs that provide more appropriate tests of context effects (D. A. Kravitz and W. K. Balzer, 1990). 123 undergraduates rated a videotaped lecture of average quality after rating (1) 2 videotapes depicting good lectures, (2) 2 videotapes depicting poor lectures, or (3) no other videotapes. Half the Ss had rated the target videotape 1 wk earlier. Analyses of the standard design implied contrast effects. Analyses of the alternative designs revealed problems with the positive context manipulation, assimilation effects in the positive context, contrast effects in the negative context, and pretest effects. It is recommended that the standard design not be used. (PsycINFO Database Record (c) 2010 APA, all rights reserved)