While 360-degree appraisals have many advantages, they are not for every employer or every type of employee.
Read Sections 8.2c Who Should Appraise an Employee’s Performance? and 8.2d Putting It All Together: 360-Degree Evaluations (p 310-313) attached.
For your initial post, imagine you are an HR manager for a company that has a large call center. The call center manager wants your help initiating a 360-degree appraisal for his call center representatives. In your initial post, discuss whether you would encourage or discourage this and why. Describe what conditions would need to be in place in order for a 360-degree appraisal process to be effective with the call center staff.