Hmmm... I totally see where you're coming from, since I have a daughter, too. My husband and I also read James Dobson's books, and use many of his principles (I believe his book, "Bringing Up Boys" is what you're quoting. BUT... I do think that if you limit your daughter to being able to sleep over only in homes without older brothers, she will eventually have very few homes that she would be able to stay. I also agree that it is a HUGE assumption to make that a teenage boy would be inappropriate with your daughter. If it were me, I'd look at a couple of things- 1)How well do you know the parents and trust their ability to monitor what goes on? 2)What is the general situation of the home when these sleepovers happen? Do the boys have free reign to socialize with the girls, and are their bedrooms far apart from the parents? (My parents had a rule, whn we were growing up- my brother and his friends were not allowed in my sister and I'd bedrooms when we had friends over, even though he was younger). 3)Do you have ANY reason to feel uncomfortable, based on something you know of this boy, or something that your daughter said? If ANY of these things send up a red flag, by all means, put a stop to it. You are charged with being a protector for your daughter. But I would really see this as a case by case issue. Also, just to clarify in regards to James Dobson's book- he actually says nothing about sleeping over w/ friends who have brothers... he talks about the trend of teenagers having same sex sleepovers, which is an entirely different issue. He does also mention what you quoted about having a male babysitter (which I agree with completely). However, he is speaking to the audience of parents of teenage boys, referring to how we as parents can protect them from temptation and from wrongly being accused. Something to think about.... I know its a hard issue! Good luck!