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結果 : is the oldest sibling the smartest
2:53

The Oldest Child Is Smarter and Here's Why

Seeker
969,432 回視聴 - 11 年前

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1:46

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

11Alive
142 回視聴 - 6 年前
10:02

First Born Children Are Smarter Than Their Siblings

BRIGHT SIDE
151,613 回視聴 - 5 年前
5:06

Why Older Siblings are Smarter???

5 MINS
30 回視聴 - 11 か月前

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4:36

HOW BIRTH ORDER CAN SHAPE YOUR PERSONALITY

BRIGHT SIDE
3,268,891 回視聴 - 7 年前
6:55

Is the oldest child always the smartest?

Chris The dude nurse
99 回視聴 - 6 年前
4:21

Are You Smarter Than Average?

AsapSCIENCE
4,912,241 回視聴 - 6 年前

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0:19

How Is The Youngest Child The Favourite?

Ryan HD
6,608,752 回視聴 - 1 年前
0:42

Siblings VS Only Child 😂

Ian Boggs
28,102,373 回視聴 - 1 年前
0:49

YOUNGEST vs OLDEST Child Be like…😏💀 #adoptme #roblox #robloxshorts

Avocado Playz
1,212,989 回視聴 - 3 か月前
0:08

The oldest sibling is the smartest sibling

Neveah🫠🧚
3 回視聴 - 1 年前