== Is Paul Krugman really a New Keynesian economist? == 

 Paul Krugmam is mostly an international trade economist and doesn't really seem to be involved in the New Keynesian "movement." From this article in the New York times, he also seems very critical of rational expectations and New Keynesian theory. 
 http://www.nytimes.com/2009/09/06/magazine/06Economic-t.html?pagewanted=1&_r=1