Is one identical twin more likely to save his money, repeat a mistake, take a short cut, buy lottery tickets, or stubbornly resist changing his mind because he was raised in a different situation? Or would the identical twin pair make the same choice regardless of upbringing? The answers from these twins are still emerging and the sample is, of course, anecdotally small. However, it is less clear how early experience might affect how we think and make decisions. We are all probably fairly comfortable with the idea that trauma, hardship, or parenting style could impact our emotional development and our emotional patterns even in adulthood. We are all, of course, eager to know how these different environments altered these men’s personalities, preferences, intelligence, and decision making when their genes were the same. One mixed pair of twins grew up in the city and the other in countryside with far more modest resources. Only in adulthood, did the young men discover the mistake and find their identical twin brothers through the recognition of friends. The boys and their families has assumed they were fraternal twins, who share genes only as much as siblings do and therefore don't look alike. Despite seemingly inexhaustible interest in the nature/nurture debate, we are only starting to learn how the interaction of genes with experience may alter the potential of individuals, and to see how individual decision-making styles can alter the potential wealth of nations.Ī captivating news image I saw this year depicted two sets of identical twins, mixed up as infants and raised in separate families in Colombia. However, we know racial and ethnic groups may also be exposed to vastly different experiences likely to strongly affect behavior. When fear and tension rise across racial and ethnic divisions, as they have in recent years, genetic arguments to explain behavioral differences can quickly become popular.
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