Robert E. Kaplan & Charles J. Palus 
Enhancing 360-Degree Feedback for Senior Executives: How to Maximize the Benefits and Minimize the Risks [PDF ebook] 

Senior executives, however, sometimes require a richer feedback experience – one which might also include one or more of the following: detailed verbatim descriptions of performance, observations from family members and friends, psychometric measures of personality and motivation, and data on early history, plus an extended coaching relationship with a professional in leadership development. With this added scope and power, however, comes increased risk, which makes it essential that additional precautions be taken. In this report, the authors offer guidelines for how enhanced feedback can be provided safely and effectively.