Children from the 30's were more intelligent, and had a much greater ability to learn than children of today.
That made me thing of this quote:
The children now love luxury; they have bad manners, contempt for
authority; they show disrespect for elders and love chatter in place
of exercise. Children are now tyrants, not the servants of their
households. They no longer rise when elders enter the room. They
contradict their parents, chatter before company, gobble up dainties
at the table, cross their legs, and tyrannize their teachers.
Attributed to SOCRATES by Plato,
So going back at least 2400 years there's been a belief by the elder generation that the younger generation has lost there way