Temperament seems to be somewhat genetic: https://medlineplus.gov/genetics/understanding/traits/temperament/ https://medlineplus.gov/genetics/understanding/trai

Temperament seems to be somewhat genetic: https://medlineplus.gov/genetics/understanding/traits/temperament/ https://medlineplus.gov/genetics/understanding/traits/temper... How much does this have to do with free stuff? Not sure. Socio-economic status might be playing a part too. It's probably just the lizard brain, or maybe bargaining culture.