For the past decades we have been collecting 360 degree feedback data about leaders.

FORBES: Ethics in Leadership: The 8 Rules to Prevent Misuse of Corporate Power

We do it worldwide and now have a half-million of these 360 degree feedback instruments that pertain to 50, 000 leaders.

FORBES: The Magic of Managerial Involvement

To fix his imperfections, Schwann's Mr. Sherwin went through a rigorous performance appraisal known as "360-degree feedback" that included customers' reaction.

WSJ: Your Executive Career - What's in Your Blind Spot?

In the original session, they received their 360 degree feedback, created a plan for their personal development and were encouraged to meet with their manager to review the feedback and obtain their support.

FORBES: Why Hands-off Management Doesn't Work

Mandatory "360-degree" performance reviews--feedback from bosses, peers and underlings--are under way for every employee.

FORBES: Paddling Upstream

Leaders and management should encourage 360 degree reviews and always use the feedback to improve themselves and the organization.

FORBES: Hiring Great Leaders

We first compared their level in the organization with their degree of likeability as measured by our likeability scale, based on feedback from their boss, peers and direct reports.

FORBES: Move up http://i.forbesimg.com t Move down