Organizational problem solving may not always be as complex as curing cancer, but at times you need to make risk-based decisions and get as close to the root causes as economically possible. We at Juran define a root cause as the cause(s) that addresses most of the problem that we as humans can control. A great example is the infamous Juran Institute Quality Minute about the Jefferson Memorial. The parks and recreation service of the US Government was dealing with high cost of maintenance of the park monuments. One in particular was the Jefferson Memorial. The building maintenance costs kept rising, and the service set out to discover why.
Root cause analysis is at the heart of all problem-solving methods, such as Six Sigma, Lean Problem Solving, and Plan, Do, Study/Check, Act. Root cause analysis is based on ‘’symptom-theory-cause.” Whether tackling daily problems or chronic problems, project teams must measure symptoms, theorize causes, and test those theories to prove root cause. The difference between methodologies are large problems need “sledgehammers and small problems need smaller hammers.” DMAIC is a sledgehammer and PDCA a hammer.
These problems differ from the larger, chronic problems that quality improvement programs such as Six Sigma focus on a comparison of the different methods to discover root causes and their uses is shown in the table below:
The lesson learned: use the right method, on the right problem, or you will waste time and money, and leaders will get frustrated that problems take too long to solve.
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Author: Dr. Joseph A DeFeo
Dr. Joseph A. DeFeo, Chairman and CEO of Juran, is recognized as one of the world’s leading experts on transformational change and breakthrough quality management.
For 28 years, Dr. DeFeo has worked as a trusted adviser helping business leaders increase sales, reduce costs and improve its customer experience through the deployment of performance excellence programs. These include Business Process Quality Management, Lean, Six Sigma, Strategy Deployment and Change Management. His recent publication, Juran’s Quality Essentials for Leaders, provides a concise message delivered for leaders to teach them how to embrace quality, not fight it, to be a globally competitive enterprise. Dr. DeFeo has co-authored three other popular texts.
DeFeo’s belief that a relentless customer focus and integrity drives business results was recently noted by Steve Denning of Forbes.com. A frequent motivational guest speaker at international conferences, Dr. DeFeo has presented in over 30 countries.