A question that we all ask ourselves sometimes Nature versus Nurture? I want to focus on Schizophrenia. Is it Inherited? Or is it caused because of the environment we live in?
I find this question similar to a question we discus in class. Does smoking cause lung cancer? Even though it has been proven that smoking causes lung cancer, some people who never smoked in their lives have lung cancer, others have smoked most of their lives and don’t have lung cancer. But that doesn’t mean smoking doesn’t cause lung cancer, it means that smoking increases the chances of getting lung cancer, but doesn’t mean anyone who smokes is going to get lung cancer. Same as Schizophrenia.
In my psychology class, we did some research on Schizophrenia and whether it was genetic or not. We looked at statics of identical twins, fraternal twins and siblings. We also looked at adopted kids living at the same household.
Research concludes that:
Identical twins same household: If one gets it, the other one has 48% chance of also getting it.
Identical twins different household: If one gets it, the other one has 42% chance of also getting it.
Fraternal twins same household: If one gets is, the other one has 10% chance of also getting it
Fraternal twins different household: If one gets is, the other one has 10% chance of also getting it.
Siblings: If one gets is, the other one has 10% chance of also getting it
Adoption: those born to schizophrenia mothers, but not raised by them still have 10% chance of also getting it.
A normal person without genetic link to Schizophrenia have 1% chanced of getting it.
These statistics aren’t accurate at all because a small number of people participate in the experiment.
Finding twins who were separated at birth, at least one have Schizophrenia and are willing to participate in the research is extremely difficult which makes the statistics not accurate.
This suggests a definite genetic link for Schizophrenia.
I came to the conclusion that Schizophrenia is caused by a combination of genetics and the living factors around us. I find it very similar to lung cancer. Smoking, which is genetics in this case have a huge factor of causing lung cancer (Schizophrenia), but some people have smoked their entire life (have both parents with Schizophrenia), yet they don’t get lung cancer. Others have never smoked a day in their life (have no genetic connection to Schizophrenia) yet they still get lung cancer (Schizophrenia).
I concluded from my own research that a combination of genetics, the environment we live in and the way the person’s mind is structured are the main reasons that cause Schizophrenia.
A Trusted Non-Profit Resource Organization did their own research and concluded that: “The causes of schizophrenia are not fully known. However, it appears that schizophrenia usually results from a complex interaction between genetic and environmental factors.”
“Individuals with a first-degree relative (parent or sibling) who has schizophrenia have a 10 percent chance of developing the disorder, as opposed to the 1 percent chance of the general population.”
While most of my research concluded that there is a definite genetic link for Schizophrenia, we can’t deny the fact that there are more than 50% of people diagnosed with Schizophrenia who have no family members with the same diagnoses. That suggests that genetic itself isn’t a the main factor that causes Schizophrenia by itself.
People with genetic link to Schizophrenia have more chances of getting Schizophrenia than other people. Yet a lot of people have Schizophrenia that have no family history of Schizophrenia.
Mayo-Clinic professionals stated that: “It’s not known what causes Schizophrenia, but researchers believe that a combination of genetics and environment contributes to development of the disorder.” Also, they suggests that Schizophrenia is definitely a brain disease.
The question is which one has more influence Nature versus Nurture? Rather than which one causes it, because research show that it’s a combination.
I definitely think that genetics have more influence than the environment, but the environment has a huge factors that can’t be dismissed.
Works Cited
“Mayo Clinic – Schizophrenia” Mayo Clinic – Mayo Clinic. N.p., n.d. Web. 18 Sept. 2014.
“Schizophreniaand Psychosis.” All About Schizophrenia and Psychosis. N.p., n.d. Web. 18 Sept. 2014.
“Schizophrenia: Signs, Types & Causes.” Schizophrenia: Signs, Symptoms, Types, Causes, and Effects. N.p., n.d. Web. 18 Sept. 2014.
Introduction to Psychology (PSYC 100) research.