Start your own Cause and Effect Diagram by downloading this template in PowerPoint and keying in your information. This type of diagram is useful in any analysis, as it illustrates the relationship between cause and effect in a rational manner. Minor branches correspond to more detailed causal factors. Each major branch of the diagram corresponds to a major cause (or class of causes) that directly relates to the effect. The primary branch represents the effect (the quality characteristic that is intended to be improved and controlled) and is labelled on the right side of the diagram. It helps people to quickly identify the root cause and stop guessing. It is easily one of the most effective tools to identify cause and effect when combined with the 5 whys. The issues in a Cause and Effect Diagram are often derived from a brainstorming session followed by the development of an Affinity Diagram. The fishbone diagram is also known as the Ishikawa diagram (named after its inventor, Japanese quality control expert Kaoru Ishikawa). The Cause and Effect Diagram aims to show all the causes leading to some head event. It is an effective tool that allows people to easily see the relationship between factors to study, processes, situations, and for planning. A Cause and Effect Diagram (also called a Fish bone Diagram or Ishikawa Diagram) is used to provide a pictorial display of a list in which you identify and organise possible causes of problems, or factors needed to ensure success of some effort.