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You can't fix much of that stuff after he is 7 years old. Educate the child so you don't have to jail the adult. At least that's the common wisdom grandmothers say in my country.

Some study I found that also mentions the seven-year milestone: https://news.softpedia.com/news/Our-Personality-Is-Fully-Dev...

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The common wisdom is wrong. Of course personalities develop after 7 years old. People's personalities develop well into adulthood. Adults are capable of developing, continuing to mature, and changing their behaviors. Who I was at age 7 is not who I am today. Who I was at age 18 is not who I am today.

Do people really think that anyone who fights with a sibling past the age of 7 is destined for prison? I guess I need to start making a plan for when I'm arrested.

Well about 1/4 of the prison population has ADHD and half are dyslexic. Female prison populations also have a very high rate of BPD.

The grandmother's where you're from might benefit from learning about pervasive developmental disorders and the effects of trauma.

Some people are dealing with stuff that isn't their fault and that they never got adequate support for.

BPD is "Borderline personality disorder", for anyone else not familiar with that TLA.

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