Graphic rating scale lists number of traits & range of performance for each; employee rated by identifying score that best describes their level of performance for each trait, unclear standards. Alternation ranking method rank employees from best to worst on particular trait. Paired compassion method rank employees by making chart of all possible pairs of employees for each trait & indicate the better employee of the pair. Forced distribution method predetermined percentages of ratees placed in various performance categories; bell curves. Disadvantages: productivity affected, low morale/confidence, always have a lower % Critical incident method keep record of uncommonly good/undesirable examp0841025400847- related behaviour & reviewing list with employee at predetermined times. Advantages: more accurate measure, clearer standards, feedback, independent dimensions, consistency. Challenges: setting unclear, non-measurable objectives, time consuming www. notesolution. com. Electronic performance monitoring (epm) having supervisors electronically monitor amount of computerized data employee is processing per day = performance.