Fed's Lockhart: Low productivity growth a "head scratcher" and not easily explained

During a Philadelphia Fed's event with Loretta Mester (Fed's Cleveland) and Patrick Harker (Fed's Philadelphia), Atlanta Fed's President Dennis Lockhart said that low productivity growth is a "head scratcher" and not easily explained.

Key headlines (via Reuters):

• Income inequality among foremost issues facing U.S., with implications for economic growth and U.S. standing in the world