Biographical note: Justin Yifu Lin is founding director and professor at the China Centre for Economic Research at Peking University. From 2008 to 2012, he served as chief economist and senior vice president of the World Bank. His many books include "Demystifying the Chinese Economy" and...

"The authors develop an endogenous growth model that combines structural change with repeated product improvement. That is, the technologies in one sector of the model become not only increasingly capital-intensive, but also progressively productive over time. Application of the basic model to...