This document outlines different types of performance appraisal methods ranging from 90 to 720 degrees. The 90 degree method involves only evaluation by a superior, while the 180 and 360 degree methods involve self-appraisal and evaluations from subordinates and peers. The 540 and 720 degree methods further include evaluations from customers or clients and calculate an average bias factor to adjust ratings.

1. Hi Professionals & Enthusiasts,
The following can be the difference,
90 Degree - Only Superior is evaluator & no appraisal discussion,
180 Degree - Superior, self appraisal & subordinates appraise,
270 degree - Superior, subordinates, then average Bias factor is calculated & multiplied to the
ratings allotted,
360 degree - Superior, peer group, subordinate, and self appraisal,
540 degree - Superior, peer group, subordinate, self and customer or client are included,
720 degree - Superior, peer group, subordinate, self and customer or client are included, then
average Bias factor is calculated & multiplied to the ratings allotted.
Regards,
Jc Lohith Shetty
President - JCI Mangalore (2014)
Trainer - Junior Chamber International, India