Kepner-Tregoe Matrix
A Kepner-Tregoe matrix is used to find causes of a problem. It isolates the who, what, when, where, and how aspects of an event, keeping the focus on the elements that have an impact on the event and eliminating the elements that do not. This allows you to compare what the problem is, with what it is not, illuminating distinctive features of the problem and pointing out its potential causes.