In an essay he wrote for Asahi Shimbun’s Internet magazine Webronza in June, professor Mikio Kawai, a specialist in “serious crime,” revealed the results of a survey he conducted last March among 1,456 “older” people.
Source: http://www.japantimes.co.jp/news/2015/07/18/national/media-national/despite-media-says-juvenile-crime-kids-alright/