結果 : is the first child smarter
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Study: first born children are smarter

KARE 11
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長男のほうが賢い、その理由は次のとおりです

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最初に生まれた子供は兄弟よりも賢い

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

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

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

Redbook Magazine
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First-born children are smarter than younger siblings

b/60
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[ESL Tutorials] - First children are smarter but why

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Science PROVES that FIRST BORN Children are SMARTER! #shorts

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Study Says First Born Children Are Smarter

The Fowler Show
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When The Youngest Child Is Smarter Than You Think.

Ryan HD
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How Being a First Born Can Make You Smarter! #facts

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Shikamaru sees that Naruto is smarter than he looks

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SMARTER THAN A KINDERGARTENER? 99% FAIL 😂 #shorts

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SMARTER THAN A KINDERGARTENER? 99% FAIL 😂 #shorts

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Are You Smarter Than a 5th Grader? 🤔 | General Knowledge Quiz 📚

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First-Born Children Are Smarter!

Shut Up Anthony!
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0:28

Discussion is over: Older Siblings are smarter according to science

Yaay Today
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Are You Smarter Than Gauss When He Was 10 Years Old? 🤯

Betterment Bazaar
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SMARTER THAN A KINDERGARTENER? 99% FAIL 😂

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