What has stuck in my mind most is - my "friend" is a teacher and she said she can spot an only or middle child after a week of being with them. So she had 4 kids so that none of them had the middle child syndrome How ridiculous. (well, sounds ridiculous to me anyway).
Really? I'm not a teacher yet, but even as a parent volunteer in my kid's classrooms, I can pick the kid who stayed up till 11pm, I can spot the kid that didn't have breakfast and I can spot the kid who seeks attention, but I've never been able to typically 'pick' the only child, or the middle child, or the eldest child. Sounds like she's talking out of her bum a bit LOL. Its not something you can just pick. Traits that you would assume an only child to have such as not being able to share, could also be typical for a child in a big family etc.