Twenty years after the introduction of the theory, we revisit what it does—and doesn’t—explain. by Clayton M. Christensen, Michael E. Raynor and Rory McDonald Please enjoy this HBR Classic. Clayton M.

Objective Lack of consensus on the definition of mental health has implications for research, policy and practice. This study aims to start an international, interdisciplinary and inclusive dialogue ...

Peter Gratton, Ph.D., is a New Orleans-based editor and professor with over 20 years of experience in investing, economics, and public policy. Peter began covering markets at Multex (Reuters) and has ...

This is a series about the mysteries of internet speak. A fictional offspring of a locust and a hen. Discoveries at sea. A door with an electronic key fob. When something is low-key, but also genuine.

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

At what point do "you" end and the outside world begins? It might feel like a weird question with an obvious answer, but your brain has to work surprisingly hard to judge that boundary. Now, ...