Denial is endemic to most project management disciplines. You can find it at all levels of management, in Risk Management, Scope Management, Cost Management, etc. and this is the main reason why the monitoring & controlling functions of a PMO are most often failing. Managers are rather showing a weak green indicator on a report, than acknowledge an amber (or even worse ... a red). But problems that are visible have a better chance of being resolved. Learn how to recognize and reform denial behaviors before they damage your project by reading Saira Karim's post titled Denial in the Project Environment on PMI's blogs.