Confirmation of Chalk's Fifth Law of Teaching:
"Never, ever listen to anything an 'Academic' says"
Teenagers went to work early in the morning on time for millenia. Whether it was to work down the mines, milk cows, or carry a bag of flint spear heads for Ug.
This was simply because they were punished if they were late. Now that we seem to regard any form of punishment as barbaric, kids turn up when they feel like it. The well known philosopher, Shane Scroggins summed this up neatly in his declaration:
"You can't make me do nuthin' you say!"
If you are an academic however, dream up some pseudo scientific explanation tailored to make a good headline for the ever more gullible. No doubt schools will fall over themselves to pander to this latest thinking.