how do I select between models of human interactions with only my biased anecdotal experience, the biased anecdotal experience of others (who I select in a biased non-representative fashion), and perhaps theories (e.g. evolutionary psychology) with unclear applicability or research studies performed in non-naturalistic settings with unclear generalizability?

This is well put. The issue you raise is why I tried to be a little more explicit about the priors that I was using here. Obviously it's a long way from giving the explicit probabilities that would be necessary to automate the Bayesian updating, but at least we can make a start at identifying where our priors differ.