Welcome! I am Johanna Isman. I am a data scientist at Assurance Services International (ASI), working with an amazing team to make sustainability claims more trustworthy.

This website serves to share the papers I wrote during my PhD at the Toulouse School of Economics, including personal views only, not necessarily representative of ASI.

My primary research fields were environmental economics and empirical industrial organization. My thesis explores the economics of voluntary certification. It focuses on the effectiveness of voluntary certification in regulating environmental externalities, such as the protection of carbon stock and biodiversity.

If you have any comments or questions, you are welcome to contact me at jj [dot] isman [at] posteo [dot] de.