What happened to the M factor in American History this time? jlolds George Pierson, M factor November 20, 2013 1 Minute Referring to George Pierson of Yale, who I’ve blogged about before here. Didn’t happen in The Great Recession and UCLA’s Michael Stoll has an interesting paper on what did happen (hint people moved locally) here [pdf]. Share this:TwitterFacebookLike this:Like Loading... Published by jlolds Native Angeleno, professor of Neuroscience and Public Policy at George Mason University View all posts by jlolds Published November 20, 2013