Jan Luiten van Zanden is professor of global economic history at Utrecht University and was between 2011 and 2015 honorary Angus Maddison professor at Groningen University. He published widely on long term economic growth in the world economy, including How Was Life? Global Well-Being since 1820. With Joerg Baten, Marco Mira d’Ercole, Auke Rijpma, Conal Smith and Marcel Timmer (Eds.). Paris: OECD, 2014.