As distinct from happiness, of course:
1. If a kid does badly in school, does the parent genuinely get mad at the kid and withhold affection?
2. Can people wait in an orderly line?
3. Can people stay in their designated lane when driving a car?
I wonder how these variables, if measured, would fare in cross-country growth regressions. I covered these points and others in my talk in Buenos Aires. Going way back, here is my sushi test for minimal levels of social trust.