What's the type of performance appraisal method in which rater must choose between two specific statements about employees work behavior ?

Developmental Purposes: It Helps To Clarify The Necessity And The Effectiveness Of The Training Programs;• Reward Purposes: Helps In Determining Who Should Receive Rewards And Who Should Be Laid Off;• Motivational Purposes: Stimulates Effort To Perform Better;• Legal Compliance: It Provides Legally Defensible Reason For Making Promotion, Transfer, Reward And Discharge Decisions;• Human Resource And Employee Planning Purposes: It Serves As A Valuable Input To Skills Inventories And Human Resource Planning;• Compensation: Helps To Identify What To Pay And What Will Serve As An Equitable Monetary Package;• Communication Purposes: The Rater And Ratee Get To Know Each Other Through Communication;