Others depend on biological consequences of spending one’s fetal period in a womb that was previously occupied by older siblings.
The effect has been referenced with regards to ‘First born/s’. Could it be oldest child instead? (Adoption might distinguish between them, but I don’t know if it’s common enough to tell. We also probably wouldn’t have the data on whether an adopted child is a ‘first born’ or not.)
The effect has been referenced with regards to ‘First born/s’. Could it be oldest child instead? (Adoption might distinguish between them, but I don’t know if it’s common enough to tell. We also probably wouldn’t have the data on whether an adopted child is a ‘first born’ or not.)