a) Critically analyse the purpose of performance management. (3 marks) b) Analyse the advantages and the disadvantages of the 360-degree appraisal as an innovation in performance evaluation. (7 marks) c) Discuss the difficulties supervisors have as raters in the employee performance. (7 marks) d) Briefly, discuss the advantages and disadvantages of the self-evaluation method in the performance appraisal. (3 marks)