John Allen Paulos has written a column that builds on a paper by Brookings scholar Jonathan Epstein about how social norms spread. Basically, when you're looking to decide how to behave in a given situation, you take a sample of those around you. If most people around you are doing things in a particular way, you stop sampling and go with the majority. If opinion is split, you enlarge your sample size until you reach a point where there is a majority, and then go with them. Most social norms are so firmly established that this process is unnecessary (driving on the right, not wearing socks with flip-flops, etc). But in certain situations that require conscious decisions--ie, voting--it can become quite relevant.
For me, the most revealing part of Epstein's paper was the idea of people consulting a sample and then expanding that sample until they hit a majority. This has implications for a couple of organizing principles--the social networking model (DFA NH) and the "influentials" model (Kerry IA).
When viewed through the lens of Epstein's model, the social networking principle is an effort to create solid patches of support by jump-starting the sampling process. You convince one person, then you ask them to push their belief on their friends. "Here, look at me, I support this candidate, therefore it is the norm. I'm your sample! Really I am!"
The influentials model, however, builds on a factor that Epstein doesn't mention--that certain people (a) are more likely to be included in a sample, simply by virtue of knowing more people, and (b) have opinions that carry more weight. If you can get a majority of those people on your side, then by the time folks get around to gathering their sample, chances are your influentials will be in it.
Epstein's model is especially useful in understanding this year's primaries, where the stakes were a little different than usual. In most elections, we hope that people pick their candidates based what they stand for. But in January 2004, the buzzword was electability. All anyone cared about was electing the candidate who they believed everyone else wanted (Michael Kinsley had a great article about this phenomenon), and the process became even more explicitly similar to the establishment of a social norm. more
