360 degree feedback
Another possible reason for poor feedback (i.e. not having enough valid information to create a substantive conclusion) - can be overcome by the use of 360-degree feedback.
This is the process of systematically gathering data on a person's skills, abilities, and behaviors, from a variety of sources - the managers, peers, subordinates, and even customers or clients.
It may be contrasted with "upward feedback," where managers are given feedback only by their direct reports, or a "traditional performance appraisal," where the employees are most often reviewed only by their managers.
The results from a 360-degree evaluation are often used by the person receiving the feedback to plan and map specific paths in their development. Results are also used by some organizations in making administrative decisions related to pay and promotions. When this is the case, the 360 assessment is for evaluation purposes, and is sometimes called a "360-degree review." However, there is a great deal of controversy as to whether 360-degree feedback should be used exclusively for development purposes, or should be used for appraisal purposes as well.