Leaders come in all shapes, sizes and personalities - and they have the potential to be highly effective in their posts. However, their effectiveness may be influenced by positive or negative strategies that have a long-lasting impact; therefore, being effective is not enough. Ronald Riggio, Ph.D., is a Professor of Leadership and Organizational Psychology at the Kravis Leadership Institute at Claremont McKenna College, and he helps us break down the areas of leadership that truly define the value of a leader in the workplace. Do leaders NEED to be fair, unselfish or open-minded with their employees? No, but there are consequences to every action. Nobody's Perfect looks at things a little backwards: What NOT to do. Mistakes are often the best teachers and errors in judgment cross all industries. Job seekers and executives alike commit a variety of blunders that you can learn from so you can avoid the common, damaging missteps.