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3/09/2026

Topic Reading-Vol.5067-3/9/2026

Dear MEL Topic Readers, 
How where you grow up affects your personality
Which determines human behavior, personality, and traits, nature or nurture? Nature, or genetics, refers to innate biological factors inherited from parents, including DNA, eye/hair color, and genetic likelihood of developing certain diseases or mental health conditions. Nurture, or environment, includes external factors, such as upbringing, parenting styles, social relationships, culture, and life experiences. How different would the personal traits of identical twins, who share almost identical DNA, be if they grew up in different families, places, or cultures? For example, while people in the West tend to be more individualistic, the Japanese people are often more collectivistic. Also, religions play a significant or fundamental role in shaping personal identity and cultural values. In the meantime, research shows that Intelligence Quotient (IQ) is over 50% heritable on average, while about 40% of personality traits are heritable, meaning the rest is developed or formed by the environment and opportunities. All in all, it doesn’t seem to be just one or the other, but both nature and nurture develop one’s personality and capability.
Read the article and learn how one’s personality could be developed differently.

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