This is true. I am a middle born and that is kinda true about me. same for my bro another middle born. and my oldersister first born. the only one that is wrong is my little sister "last born" she isn't like that really.
What about Fear of water? Phobias: xenophobia definition is a bit simplistic; yes 'strangers' but also more towards the fear of foreigners. Usually, used socially and culturally than just 'strangers' but I digress.