ECRI Update

http://www.ritholtz.com/blog/2010/06/ecri-weekly-leadinbg-indicators-widely-misunderstood/

• After all, a 63-country IMF study on economists’ recession-forecasting prowess concluded that “The record of failure to predict recessions is virtually unblemished.” In contrast, the IMF subsequently noted that ECRI “has actually had a very stellar record” of recession forecasting.
• Virtually the entire analytical community has been trained to believe that any and all quantitative approaches to forecasting must involve models, i.e., simplified representations of reality. The idea that there could be rigorous quantitative approaches that are not model-based seems to be entirely beyond their ken. Their understanding of analytical techniques is so model-soaked
• So it is with economists who cannot imagine that ECRI’s leading indexes are not model-driven or based on back-fitting of data. Thus the BofA report notes that “the ECRI (sic) and other leading indexes . . . fit the business cycle better ex post than ex ante” and that “This is an example of a broader issue in all statistical models of the economy. The data fit much better in-sample than out-of-sample.”
• Bottom line, neither the “experts” predicting that the sky is falling based on the WLI, nor the other “experts” indulging in misinformed WLI-bashing in an effort to discredit the super-bears, have a real clue to what the WLI is all about. We created the WLI not to be an infallible, stand-alone recession-forecasting machine, but as one small part of a much larger array of leading indexes (each made up of many economic indicators) — like the especially prescient U.S. Long Leading Index. This array amounts to a sophisticated sequential signaling system of the economy’s cyclical turning points. The WLI is designed to be interpreted in this broader context, and its message today is quite simple: A slowdown in U.S. economic growth is imminent, but a new recession is not.

"It is one thing to slip to or fractionally below the zero line, but a -3.5% reading has only sent off two head-fakes in the past, while accurately foreshadowing seven recessions — with a three month lag. Keep your eye on the -10 threshold, for at that level, the economy has gone into recession … only 100% of the time (42 years of data)."