> On the other hand, there is no way to measure the "effectiveness" of TDD as compared to not using it. There are definitely ways to measure, for example by it

> On the other hand, there is no way to measure the "effectiveness" of TDD as compared to not using it. There are definitely ways to measure, for example by it's impact on bug resolution time. The following study looks at static code quality, but it could be applied to TDD: This study is about static code quality, but could be applied to TDD as well. https://www.researchgate.net/publication/359129462_Code_Red_The_Business_Impact_of_Code_Quality_--_A_Quantitative_Study_of_39_Proprietary_Production_Codebases https://www.researchgate.net/publication/359129462_Code_Red_...