Реферат: Nurture Plus Nature Essay Research Paper Nurture

p.112).

Being a twin involves sharing almost everything together in life from

toys, rooms, or clothing to appearance and psychological characteristics.

Unfortunately, sharing psychological characteristics through hereditary can

possibly lead to sharing psychological disorders as well. It is clear that the

closer the genetic similarities are between twins (identical or fraternal),

family members, or perhaps distant cousins, the more likely similar disorders

are receptive to people in the same gene pool. Studies have proven that

identical twins have a higher fate, than fraternal twins, to share psychological

disorders such as autism, anxiety, substance abuse, and schizophrenia (Rathus

p.112). Hypoglycemia, diabetes, alcoholism, lactose intolerance, and other

biological disorders in the metabolism can also become mutual problems between

identical twins, and also, with a less chance, in fraternal twins as well

(Masters). Determining from the evidence presented by research and studies on

twins, it may appear that the genetic heredity of nature has a prevailing edge

over the environmental factors of behavior. Following his extensive research on

twins, Thomas Bouchard concluded that 1) “Genetic factors exert a pronounced and

pervasive influence on behavioral variability, and 2) the effect of being reared

in the same home is negligible for many psychological traits”(Turecki).

Following his various research on twins it is indisputable that Bouchard heavily

supported the genetical factors involved in behavioral characteristics.

Although Bouchard presented quality evidence behind his statements

supporting the general roles in behavior, the various effects of extreme

environmental situations was overlooked in his findings. This contradicting

evidence later resurfaced through research by Adler, Plomin, Rende, and others

(Rathus p.345). Bouchard also expressed his optimism in genetics, stating that

seventy percent of the variations for intelligence quotient (IQ) is linked to

heredity (Turecki). The topic over the influence of genetics on intelligence has

also become a common disputed topic. These new experts have balanced the