comp and Benefits, management homework help

Briefly answer the following questions

What is Performance Management and how can Performance Appraisal and Pay for Performance support it?
Click-on http://www.performance-appraisal.com/intro.htm and select the “Appraisal Methods” button to the left. Read about the three most common appraisal methods and describe which one better supports pay-for-performance and why.
Differentiating pay and recognition based on performance can be difficult for a manager. Why?
What are the advantages to employees and to the enterprise of employing variable incentive pay plans?
What’s your opinion about compensation as a motivator of behavior?