An effective coach knows what questions to ask when evaluating a situation, assessing problem behaviors, and calibrating his or her own coaching abilities. An effective coach also draws on a wide variety of techniques to help a manager change problem behaviors. Sometimes executives tend to focus only on the bad and overlook the good. The goal of coaching, however, is to help someone be more effective, not to build a case for the prosecution. A wise executive will recognize that the manager's behavior is not likely to change, because he is simply expressing his true character. Three tests reveal whether or not a problem behavior is based in character. First, the behavior is part of a pattern seen in different contexts. Second, the problem behavior is generally observable over a long period. Third, character flaws tend to express themselves in a complex array of behaviors rather than in a single one.