The son of a job part had strong behavior problems. He would usually throw objects at his teachers, yell at other kids and use physical/verbal violence to hurt others. When he felt scared, he would usually start jumping in the same spot until his father came to calm him. He didn't have mental retardation or something like that, because he could learn and do tests normally, but his actions were really strange for a twelve year old boy. I'm curious about this, but I don't know if this question belongs here. Ask me everything you could need to identify his mental illness. Thanks.