Every method of performance measurement has strengths and weaknesses. In your professional experience, you have undoubtedly experienced many different types of performance evaluations, and have thoughts about what worked well and what did not work well within these systems. You have now begun to delve into the literature on performance measurement, which presents a range of theoretical and practical perspectives.why rate people at all? What is the purpose and intent? What would occur in people and the environment if people were not rated or evaluated?