It would be necessary to eliminate all other possible causes as equal or greater

It would be necessary to eliminate all other possible causes as equal or greater influence. There is only one cause originating with neoteny that we know of that is a probable influence and its greater pliability (lower resistance and aggresion). I dont see it holding up at scale. Culture and language are too influential. If we look at the intergenerational asian diaspora that exits their culture we only see lower aggression, higher self regulation, and lower verbal acuity, with extraordinary success while maintaining those traits. So its only manifesting lower aggression.

Reply addressees: @Will_Benge