Overconfidence in Quality Systems: How Unwarranted Certainty Creates Escaping Defects
Experienced inspectors and engineers who trust their intuition over objective measurement are a primary source of escaped defects. Here is…
The Psychology of Quality
397 articles
Phantom Trends and Process Tampering: Stopping the Clustering Illusion
Human cognition systematically perceives meaningful trends in random manufacturing data. Here is how to build structural defences that stop unnecessary…
Efficiency Without Proportionality: When Faster Processes Produce More Total Defects
Rate-based quality metrics hide a structural trap: as throughput rises, improving defect percentages can still increase the absolute number of…
Pareto Analysis in Quality Management: Prioritising the Vital Few Defects
Most quality teams count every defect but fail to prioritise them. Applying Pareto analysis by cost of quality shifts resources…
The Lindy Effect in Quality Management: Why Proven Practices Outlast Methodology Fads
The quality frameworks most likely to survive the next crisis are the ones that have already survived the last five.…
The Quality Pre-Mortem: Forcing Systemic Failure Analysis Before Launch
Standard risk tools like FMEA systematically miss interaction failures. The pre-mortem is a structured 90-minute exercise that exploits prospective hindsight…
Training Investment and Quality Output: The Reciprocity Principle
Cut operator training to save costs and the production floor will return the favour. The principle of reciprocity explains why…
The Einstellung Effect: How Quality Expertise Creates Systemic Blind Spots
Your most experienced engineers are the most likely to apply a familiar solution to a novel problem. Here is how…
The Ringelmann Effect in Quality: Why Adding People to Teams Dilutes Accountability
How the mathematical principle of social loafing undermines 8D investigations, CAPA systems, and FMEA teams — and the specific structural…
Diminishing Returns in Quality Systems: Finding the Optimal Investment Point
Quality investment follows a curve. Leaders who do not know where they stand on it will spend millions catching defects…