The Focusing Illusion in Quality Management: When One Metric Breaks the System
When leadership locks onto a single KPI, the organisation optimises that number while delivery, maintenance, and process capability quietly collapse.…
The Psychology of Quality
397 articles
Confident but Unqualified: The Dunning-Kruger Effect in Quality Management
The people who know the least about your quality processes are often the most certain they understand them. Here is…
Dismantling the Hidden Factory: The Capacity Your Metrics Hide
Rework loops, redundant inspections, and rescue efforts consume up to 40% of your capacity without appearing on any dashboard. Here…
Small Samples, Big Decisions: The Statistical Trap at the Heart of Quality
Why twelve defects in 120 units feels like a crisis but proves almost nothing — and how to build systems…
Simpson’s Paradox in Quality Metrics: When Aggregate Data Lies
Aggregate KPIs can show improvement while every individual process is deteriorating. Here is how to detect the statistical illusion, quantify…
Base Rate Fallacy in Quality: Why Dramatic Defects Steal Resources from Real Risk
Quality teams systematically over-invest in dramatic, rare failures while ignoring the high-frequency base rates that drive the majority of defect…
The Law of the Instrument in Quality Management
Why organisations force every problem through a single methodology, and how to build a quality function that selects tools based…
Removing Unexplained Quality Controls: Chesterton’s Fence in Manufacturing
When lean initiatives target undocumented inspections, the cost of removal is often delayed and catastrophic. Here is a framework for…
Problem Framing in Quality: How the Wrong Question Costs the Most
The most expensive quality failures begin not with bad data, but with the wrong question. Here is how cognitive bias…
Parkinson’s Law in Quality Management: How Deadlines Dictate Corrective Action Duration
Quality projects expand to fill the time allotted. If you want faster corrective actions and leaner 8D cycles, stop allocating…