Halo and Performance Appraisal Research: A Critical Examination

The different conceptual and operational definitions of halo are reviewed, and problems when using halo as a dependent measure in performance rating research and practice are pointed out. Four major points are emphasized: (a) There is no agreed on conceptual definition of halo; (b) the different conceptual definitions of halo are not systematically related to different operational definitions (i.e., measures) of halo; (c) halo measures may be poor indexes of rating quality in that different halo measures are not strongly interrelated and halo measures are not related to measures of rating validity or accuracy; and (d) although halo may be a poor measure of rating quality, it may or may not be an important measure of the rating process. The utility of assessing halo to determine the psychometric quality of rating data is questioned. Halo may be more appropriately used as a measure to study cognitive processing, rather than as a measure of performance rating outcome.