Interesting new research. In the past, there was some evidence that middleborns were the most likely to have adjustment disorders (e.g., depression, anxiety) and suicidal thoughts — the good ol’ “middle born syndrome” — but new evidence suggests that youngest at greatest risk. Here are some of the reasons given by the researchers:
Younger siblings are often bullied by their olders, with many known harmful effects.
Less parental attention and supervision and parents’ lower awareness of children’s psychological health.
Weaker attachment between later-born children and their parents because of less time with parents.
Also could be due to higher age of parents at children’s birth.
Some interesting thoughts!
Very rare & because share same genes & in utero environment they are more identical than typical identical twins! And, they were born on Mother’s Day… meant to be?
Typically, identical twins are not 100% identical because of different genetic expression likely based on differing in utero hormonal and other experiences, as well as extremely minor genetic mutations. But in the case of these newborns, their in utero exposure should be identical, making them even more similar than typical monozygotic twins that experience different amniotic sacks. An important aside: they will still have different personalities…like all twins… which means much if not most of our personality development is due to post-birth environmental reasons. Probably the biggest reason? Living with having to differentiate from a sibling!