Psychological resilience is difficult to study directly or even define, since experimental isolation or testing of it in children is almost definitionally uneth

Psychological resilience is difficult to study directly or even define, since experimental isolation or testing of it in children is almost definitionally unethical. But what a large body of research shows is that the most psychologically resilient adults are those who were not forced to demonstrate emotional fortitude in childhood. This makes intuitive sense too, otherwise you'd expect to see adult children of addicts, war orphans, grown child soldiers etc having the most stable temperaments, a thing that is just notoriously not the case.