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“Through new genetic studies, clinical observation, and research on identical twins and adopted children, we are becoming increasingly aware that many of the human characteristics previously taken for granted as products of childhood rearing and environment are rooted in the genetic matrix.”, (Neubrauer, Peter.p 38) Studies of identical twins reared apart have provided researchers with a lot of clues about the role of heredity in everyday life behavior.In his international best seller book, he argues that we are merely a product of our genes and our main purpose in life is to serve the genes, become distribution agents and ensure their proliferation.
Boston globe.) These examples reveal the genetic role in our development.
They also expose our predisposition to certain traits and behaviors.
” As one grows from infancy to adulthood, social experience plays a critical and constant role in the regulation of growth , behavior and emotions,” (Glick, Marion E.) Here we are told that social deprivation at different stages of development can lead to abnormalities in the stress hormone system, which may produce severe and long-lasting physical, neural and psychological consequences.
It is also interesting to consider the gender differences due to the change in environment.
When asked about the reason they felt to be so clean, the first one replied ” My mother.
When I was growing up she always kept the house perfectly ordered. ” When his twin brother was asked the same question he answered “The reason is quite simple.
Another study on heredity and alcoholism conducted by Goodwin (1973) indicated that adoptees with alcoholic parents were four times more likely to become alcoholics than those without, although there was no such relationship with alcohol misuse in adoptive parents, (Pelle, Stanton. Even though scientists have only identified 16,000 out of the total 100,000 genes, many psychological diseases are on the verge of being unraveled.
Take for instance schizophrenia, a disease characterized by (hallucinations, delusions, flat or inappropriate emotional expression, paranoia and suspiciousness).
She insisted on every little thing returned to its proper place,… I’m reacting to my mother, who was an absolute slob.”, (Neubrauer, Peter P 21) In this example, we see a natural preference based on heredity.
Both twins blamed their mothers for their behaviors, while none of the mothers required such neatness.