Yes.
I would like to build on what Dr. Henry mentioned.
One of the requirements we have in STR8 UP is that people who want to join write an autobiography. I've read a variety of these autobiographies, and one young person's autobiography that I read said the following: “When I was 8 and 9 years old, running the streets of Saskatoon, stabbing and shooting people, I wanted others to feel the pain that I was feeling inside.”
When a young person is in jail, as Dr. Henry mentioned, the issue of the emotional challenges they have is not being dealt with, because this young person is locked up 23.5 hours a day, seven days a week. Without any programming they become even more entrenched, because they're able to build networks.