First Born Children Are Smarter Than Their Siblings

The Oldest Child Is Smarter and Here's Why

New study says the oldest child is smarter than their siblings.

Why Older Siblings are Smarter???

First-born children are smarter than younger siblings

Elder Siblings Smarter?

Are You Smarter Than Average?

First-Born Children Are Smarter Than Their Siblings A Study Says

Why are elder siblings smarter? #shorts

The older sibling is always smarter 🤣 #siblings #funny #argue

First-born children may be smarter than their siblings, study finds

First-Born Children Are Smarter Than Their Siblings A Study Says | Woman's Day

I’m smarter!😜💗💜 #sisters #shorts

#when your little brother was smarter tgen the older sibling

First-Born Children Are Smarter Than Their Siblings A Study Says | Redbook

Older taller smarter #comedy #funny #siblings

I'm stronger, I am smarter, I'm better! - Oldest sibling

I’m Smarter Than All Of My Family Combined 😱

#pov : y/n potter strikes back || but i got smarter i got hotter in the nick of time