Outline and evaluate the Biological approach to abnormality

The biological approach suggests that psychological disorders should be treated medically, as this model puts forward the idea that any psychological abnormality is causes by genetic factors and body malfunctions. The model as 4 different elements that may be the cause of psychological abnormalities; viral infections, biochemistry, brain damage, genetic factors. Several studies have been carried out by different researchers to investigate the theories of the model.
Biochemical elements, is one of the highly researched parts of this model, where Weinberger in 2002 carried out research that suggested the 22nd chromosome doubled the risk of developing schizophrenia, another study carried out by Zubieta in 2000, where PET scans helped figured out that 30% higher levels of dopamine, serotin and norepinephrine were i9n people with bipolar disorder. On the other hand Janowsky carried out a study to show how biochemical imbalances lead to manic depression. While souse carried out a study in 2010 where genomes of 1000 autistics and 1200 non autistic participants, results showed that autistic participants carry 20% more copy number variation which suggests that this may be caused due to genetics.
The viral infections elements were also researched by brown in 2000 where findings suggested that there’s a link between respiratory infections and the second trimester of pregnancy, which may results in the foetus developing schizophrenia in their adult life. Whereas Gasket carried out a study in 2009 found that the parasite toxoplasmosis can be transferred into humans through food that may be contaminated by cat faeces which may develop schizophrenia or manic depression. Viruses and bacteria from the cat faeces may be the cause of mental illness. Studies have also been carried out on the idea that brain damages can