the Fishbone Diagram provides a relatively easy-to-understand diagram of the cause-and-effect relationship that the investigator wants to communicate.Īlso, Fishbone Diagrams have a long history of over 50 years of use. It is easy to see what the investigator sees as the main problem (the head of the fish), the major factors influencing performance (the main bones attached to the spine), and the potential causes (the minor bones). Like 5-Whys and Brainstorming (which can be used to develop the “bones”), the technique is simple to learn and apply. Let’s start with the fact that a Fishbone Diagram is fairly easy to use. Fishbone Diagram “Pros”įirst, let’s review the pros of using Fishbone/Ishikawa Diagrams for root cause analysis. Now that you understand what a Fishbone Diagram looks like and how you might draw one – let’s review the pros and cons of the technique when it is used for root cause analysis. In the example below, the major factors are: He published a description of the technique in 1990 in the book Introduction to Quality Control.Ī Fishbone Diagram (a sample of which is shown below) shows the problem at the head of the fish-like looking diagram and a backbone with major factors that can bring success or failure to the process as the major bones attached to the backbone. The root cause analysis technique called a Fishbone Diagram (or an Ishikawa Diagram) was created by university professor Kaoru Ishikawa in the 1960s as a quality control tool. ![]() How Fishbone Diagram Root Cause Analysis Works ![]() Therefore, I thought I would outline the pros and cons of Fishbone Diagram root cause analysis. They explain how they use the technique, but they usually leave out the disadvantages of using a Fishbone Diagram. Recently, I’ve seen several articles explaining Fishbone Diagram root cause analysis. Octo| Mark Paradies Fishbone Diagram Root Cause Analysis – Pros & Cons Pros & Cons of Fishbone Diagram Root Cause Analysis (Ishikawa Diagram)
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