I have 2 girls, one is six and one is three. My 6 year old is beyond her years, she is very responsible, and logical. I got the Mora for her because she always wants to use mine, and because I thought that she was ready to start learning on a real blade the very basics. Safety, muscle memory, control. I just got done hovering over her and giving her instruction while she made some feather sticks and spear points. After she is done we lock it up and she can ask any time she wants more practice with me there.
I really think it depends on the kid. I just gave a few Moras to my Nephews who are 11 and 8 (boys), and I'm thinking that may not have been so good after working with them for a bit.
Aint those girls great?!?! Thanks Cereal