Get off your ass and experiment

When researchers are trying to build a model of rat behavior they might observe rats in the wild, but this isn't all they do. The vast majority of research involves stimulating rats under controlled conditions. It would be highly inefficient to stand around watching rats in the wild and hoping a situation analogous to some test you're interested in will happen eventually. Similarly you aren't going to build a very accurate model of humans standing around watching them. Go provide some stimulus.