Factors distortion performance appraisal either intentional or not can be minimized by several training programs, including training programs related to the information, motivation and expertise / skill. For example relating to information, training programs addressing an overview on the overall performance management system. Associated with motivation, training programs given to the assessor is given the understanding that the information provided by the assessor accurately will give them a direct and tangible benefits. There is no performance management system that is very easy, and rating performance is essentially subjective, however, the implementation of such training programs, along with accountability and rewards associated with the rating accurate, will give the assessor motivation and expertise / skills needed to minimize errors in judgment / rating.