Write a paper, in the format of an economics journal article, discussing the changes in economic analysis in the past 60 years, based on your analysis of journal articles in the American Economic Review, Journal of Political Economy, and Quarterly Journal of Economics. You may select any one of these journals, or look at two or all three, to see how economic analysis has changed since the 1950s. You should compare the type of research that appears in the journals in the 21st century with that of the 1950s and the 1970s. You can examine the methods employed in the articles (mathematical and statistical analysis, for example), the subject matter (including what fields, such as international trade, industrial organization, etc., are represented), the mix between pure theory and policy-oriented articles, and other interesting differences in the type of work that appeared in the journals then compared to now. You can organize your analysis by adding charts and tables to your paper, for example, to show how fields covered in articles have changed, or to categorize mathematical and statistical techniques employed. You can limit your analysis to a particular field if you want, to show, for example, how labor economics or industrial organization research has changed over that time period. Based on an examination of articles in the 1950s and the 1970s, would you say that economic analysis changed more from the 1950s to the 1970s, or from the 1970s to today? Your ultimate goal in the paper is to understand and explain how the subject matter and methodology of economics has changed over the past 50 years, and to gain some insight into why those changes took place. You may want to look at the first two articles in the February 2011 American Economic Review for some background.