Ishikawa diagrams (also called fishbone diagrams, [1] herringbone diagrams, cause-and-effect diagrams) are causal diagrams created by Kaoru Ishikawa that show the potential causes of a specific event.
A fishbone diagram, sometimes referred to as a cause-and-effect diagram or an Ishikawa diagram, is a quality tool that helps users identify the many possible causes for a problem by sorting ideas into useful categories.
An Ishikawa diagram is a diagram that shows the causes of an event and is often used in manufacturing and product development.
A Cause-and-Effect Diagram (aka Ishikawa, Fishbone) is a picture diagram showing possible causes (process inputs) for a given effect (process outputs). In other words, it is a visual representation used to determine the cause (s) of a specific problem.