Yes that's a fairly good point and I don't know any easy way around it either. Looking in the world of business, government, politics etc etc. would be a matter of fairly subjective ideas about moral goodness.
I suppose you could formulate an approach along the lines of experimental psychology, where you could deliberately design experiments with clearcut good/bad group outcomes. So get a bunch of people to be leaders in an experiment where their goal was to minimise their group members (including themselves) getting hit in the head with something unpleasant, build-in some selfish vs unselfish options, and then look at the correlations between leadership behaviours and oxytocin or whatever else you wanted to measure as an input. With a robust range of experiments you could perhaps develop something broadly useful.
In the big survey, political views are divided into large categories so that statistics are possible. This article is an attempt to supply a text field so that we can get a little better view of the range of beliefs.
My political views aren't adequately expressed by "libertarian". I call myself a liberal-flavored libertarian, by which I mean that I want the government to hurt people less. The possibility that the government is giving too much to poor people is low on my list of concerns. I also believe that harm-causing processes should be shut down before support systems
So, what political beliefs do you have that don't match the usual meaning of your preferred label?