Increasing performance appraisal effectiveness: matching task types, appraisal process, and rater training.

The search for one best performance appraisal format ignores differences among jobs. A performance appraisal system tailored to fit ratee task characteristics is proposed. This approach, which involves systems designed to deal with tasks where both availability of reliable and valid performance measures and knowledge of the transformation process may be either high or low, is expected to increase the relationship between observational accuracy and accuracy in rating performance, as well as to improve ratees' future performance.