[Nixenkind]

I voted "10", but it's really hard to say. My eldest daughter is almost eleven, and she is super responsible- I can leave her alone without problems, but rarely do it, and then for 1-2 hours max, to run some errands. My second daughter (9) is a wild card: all confident at first, and then she gets massively scared and can't control it... before I return and find her in tears, I'd rather not do it. But: both girls are out and about in our 2,400-souls-village, on their own, visiting friends and stuff. And: my 11-year-old is responsible enough to take her brothers (6 and 4) to the playground, but mostly it's a combination of a), my daughter being so responsible, and b) my sons being very nice and obedient, so.... it's hard to give a general answer. But 10 sounds about right for me.