I recently read somewhere that an 8 year old girl didn't know her home address, and also couldn't say what her surname was. I found this really odd as my 4 1/2 year old son already knows his full name, address and phone number, because we've taught him in case he ever gets lost. Does anyone else think it strange that a child of 8 wouldn't know their surname or address? I'm wondering whether it's normal at that age, or whether it's just a case of the parents neglecting to teach them to the child. Just curious.