The Quarterly Journal of Economics is a peer-reviewed academic journal published by the Oxford University Press. Its current editors-in-chief are Robert J. Barro, Elhanan Helpman, Lawrence F. Katz, and Andrei Shleifer (Harvard University). It is the oldest professional journal of economics in the English language, and covers all aspects of the field—from the journal's traditional emphasis on microtheory, to both empirical and theoretical macroeconomics.