According to the news, Japanese teenage women ______ .

"Japanese teenage women have grown increasingly violent, in the last 20 years." A criminologist said yesterday. "The ratio of women in their teens inflicting bodily injury has risen to more than 20 per 100,000 of the total Japanese population, more than 7 times the level 20 years ago," said Jinsuki Kajiyama, a professor at Tokyo Institute of Technology. "Japanese males have shifted increasingly to aggression previously linked with women, such as bullying others by excluding them from conversation," he said.