A University of California, Los Angeles-led research team found that, in certain instances, first-born daughters tend to mature earlier.

A new study supports "oldest daughter syndrome," examining how pregnancy stress impacts older sisters' responsible behaviors.

Because oldest child syndrome is not an official diagnosis, there is no clinical definition for it. However, there is a common set of characteristics found among first born children that may influence them both presently and into adulthood. While for many this is just an opinion, some researchers have found commonalities, leading to theories that

Your oldest sister will feel so validated by this.

Unpopular opinion : you don't need to be the eldest daughter to experience eldest daughter pressures. I spoke about this on @threads and so many fellow youngest daughters had a lot to say on this. "Eldest daughter syndrome" comes from having to take on too much responsibility as a child. Usually due to being the oldest and the female child. But there are so many other nuances that can lead the rest of us to feel it too. "Eldest daughter syndrome" is a type of parentification where you had...

Mental health experts reveal how birth order affects well-being and how you can prioritize your joy.

#oldestdaughter