Probability this ties into r/K parenting styles?
This developmental scenario of chronic stress is a common one for children exposed to abuse and neglect early in life. Having an underdeveloped fronto limbic system biases these children towards hyper-reactivity to aspects of their environment that they perceive as threatening. This includes a strong tendency to perceive other people as untrustworthy, based on prior learning that has become the basis for habitual ways of responding to attachment figures. In common parlance, these kids are more prone to flipping their lids and either blowing up or freezing in fright when they detect signs of negative intentions or rejection, especially in other people’s facial expressions and voices.
Imagine a whole society like that.
Like, a low trust society.
Bolded: Also see amygdala and hypofrontality studies.
Child psychology is important.
Wanna know more?
This topic is behavioral epigenetics.
Again, this topic is listed as Behavioral Epigenetics.