Trasteandolinux? This is an interesting article. I cannot believe that nobody has upvoted it in the past two years. Before I read your article, I didn't know exactly who created the Tanner Stage chart (James Tanner). Anyhow, if my understanding of the Tanner stages is correct, Tanner Stage 1 includes a youngster's childhood from birth right up to before he or she enters into puberty. Then the subsequent Tanner stages pertain to a boy or girl's pubescent and adolescent transition on to adulthood. Correct me if I'm wrong.