My friend asked me for guidance regarding her son, so I am passing the question on. 

Her very talented son is a senior in high school. Since it is his last year at home, he feels that he no longer needs input from his parents. His is a very bright, well-mannered and popular young man who was home-schooled until 9th grade. His parents feel he has had limited exposure to "the real world" and that he would continue to benefit from their guidance. 

They do not want this transition to mar their very good relationship and create a problem between them. Yet, [research](http://www.education.com/reference/article/Ref_Boys_Girls/They/) indicates that the human female brain is not fully mature until between 21 and 22 years of age and the male brain is not fully mature until nearly 30 years of age. 

My friend recognizes the importance of the decisions her son will makes at this time in his life for impacting his future. 

What are your suggestions? How can they promote his independence, but provide parental guidance and the benefit of their age and experience?