There's a lot of research in this area. You might not like the conclusions. Fukuyama (Trust) or Putnam (Bowling Alone) might be a good place to start, or here

There's a lot of research in this area. You might not like the conclusions. Fukuyama (Trust) or Putnam (Bowling Alone) might be a good place to start, or here is a public paper by Putnam: https://www.puttingourdifferencestowork.com/pdf/j.1467-9477.2007.00176%20Putnam%20Diversity.pdf https://www.puttingourdifferencestowork.com/pdf/j.1467-9477.... Here's another prominent paper: https://www.sciencedirect.com/science/article/abs/pii/S0047272701000846 https://www.sciencedirect.com/science/article/abs/pii/S00472... Uslaner (2002) makes a distinction between moralistic trust ("Can people be trusted?") and strategic trust ("Can THIS person be trusted?") that you may find interesting. There is also Yamagashi's Paradox: Japanese cooperate more, but trust less. Americans trust more, but defect more in specific situations.