Cause and Effect

Abstract:First developed in the 1960s by Bell Laboratories, cause and effect tree analysis looks back in time to identify potential causes of a known event. “And” and “or” logic is used to graphically show combinations of events leading to this top event. One advantage of the technique is that it can help identify multiple-event failures. It can also show design and operational errors. Three examples illustrate the application of cause and effect analysis in different situations. An online continuation of the article includes examples of symbols and structures and a nine-step …

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Very well illustrated, using good examples.
--Hasan Jafri, 04-07-2010

Good examples. It is also great timing, since I am currently developing some introductory cause & effect training for some of our staff and will be using your article as a reference.
--Rich Steiner, P.E., SSGB, 02-25-2009

A very good article. I teach quality operations and decided to use this article with my students to help them understand how to construct this tree. Great tool.
--Prof. Frank Armstrong, 02-23-2009

This is an old concept but well written and presented.
--tom sheffrey, 02-23-2009

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