A Kyoto University primatologist suggests that Japanese young people wielding mobile tech are acting increasingly like chimpanzees. Nobuo Masataka's study is called "Keitai wo Motta Saru (Monkeys With Mobile Phones)." From MSN Mainichi Daily News:
He says that young Japanese have lost the ability to discern between public and private space. He adds that they have formed what he calls the dearuki-zoku (out and about tribe).
"There's been a dramatic increase in the dearuki-zoku. They don't eat meals at home with family members and you can clearly see with your own eyes the large increase in young people who hang about on the streets together with the same old friends," Masataka tells Sapio. "They make places like Shibuya their territory and rarely head even to places like (nearby entertainment and shopping districts) Shinjuku or Harajuku. They get tired going to new places or meeting new people. If they get hungry while they're strolling around, they simply get food by going into a convenience store, buying something and sitting down outside on the curb to eat it. If not that, then they just hang around for hours in fast food joints."
The primate specialist says the actions of the dearuki-zoku closely resemble behavior patterns in chimpanzees, which tend to travel in groups, walking around for a long time without going to any specific place, then eating and disposing of their wastes in the same place before bedding down on piles of grass whenever and wherever the inclination takes them.