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Phần 1

While it may be difficult to objectively gauge exactly how …(1)…someone is. Researchers have found some interesting traits that appear to indicate …(2)… One side is that you're from a smart …(3)… Studies conducted on the brains of identical and fraternal twins found that the makeup of certain areas specifically those associated with …(4)…and cognitive skills was very similar, suggesting that brain development and IQ are heavily influenced by …(5)…

And if you're the oldest …(6)…in your family, you may have a slight intellectual advantage over your younger siblings. Researchers found that a family's …(7)…had an average IQ three points higher than the next closest sibling. But the difference is thought to be psychological due to differences in …(8)…between parents and children more than it is biological.

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Từ mới: 

objectively: khách quan

gauge: đánh giá, đo lường

traits: đặc điểm

conducted on: tiến hành trên

identical twins: sinh đôi cùng trứng

fraternal twins: sinh đôi khác trứng

makeup: bản chất, tính chất

siblings: anh em

Phiêu Linh