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March 10, 2007

Expectations and Business-Cycle Dynamics

20070310_mentions_of_recession_chinn_1 Menzie Chinn tracks mentions of "recession" on Technorati. Can we use this as a reliable variable measuring some aspect of market expectations?

Comments

Uh, a Greenspan bounce? Blippy, so far.

Clearly the series has to be detrended in some tricky way, since the gross inflation of cyberchatter creates an irregular trend. One could simply divide by "blogs searched" or whatever. I would normalise by looking at the ratio of mentions of "recession" and of "expansion" or "recession" and "boom".

Technorati's built-in grapher doesn't allow that level of sophistication. But here's the simple case for "expansion":

http://technorati.com/chart/expansion?chartdays=360&language=en&authority=a1

Looks like the only clear conclusion is that people are suddenly talking about the economy a lot in the last week or so. Which is no more than we'd expect following the recent Chinese-triggered slump.

Or let's try posts on blogs about "Economy" with "a lot of" authority (presumably based on being linked to), for "growth" vs "recession":

Growth:
http://technorati.com/chart/growth?chartdays=360&language=en&authority=a7&blogtag=economy

Recession:
http://technorati.com/chart/recession?chartdays=360&language=en&authority=a7&blogtag=economy

Seems like growth wins after all.

...although the graphs that really shock me are the ones showing that climate change is more talked about than Britney Spears.

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