Contributor(s): Professor Robert Hall | The annual Phillips Lecture, jointly sponsored by the journal Economica and the Department of Economics in which Professor Hall, one of the world's leading macroeconomists will speak on the macroeconomics of persistent slumps. Robert Hall is Robert and Carole McNeill Senior Fellow at the Hoover Institution and Professor of Economics and Stanford University. Francesco Caselli is the Norman Sosnow Professor of Economics at the London School of Economics and Political Science. The Department of Economics at LSE (@LSEEcon) is one of the largest economics departments in the world. Its size ensures that all areas of economics are strongly represented in both research and teaching.