(outlink) Elaboration Likelihood Model

The Elaboration Likelihood Model is a model of persuasion, one attempting to be all-encompassing. The description include (under "Variables", of all things) good summaries of the more well-known mini-theories of persuasion (e.g, reactance, congruity, classical conditioning), so even if the theory should turn out to be less than useful (it's been around since 1982 and I haven't heard of it), the summaries are good :)