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Discuss One or More Biological Explanation of Schizophrenia

However, the concordance rates for non identical (DZ) twins are 17%. Rosenthal (1963) did a case study of quadruplets (girls) and found that the concordance rates showed that all four developed schizophrenia. This evidence shows that if you are a MZ twin then your chance of contracting schizophrenia rises by 48%.
             Tianari(1991) did a study using 155 schizophrenic mothers who gave there children up for adoption. These children were compared to the same size sample of adopted children who had no family history of schizophrenia. 10.3%of children with a schizophrenic mother developed schizophrenia compare to 1.1% of those who did not have a schizophrenic mother. This shows that because 10.3% is lower than the percentage proposed by Gottesman, which was 16%. This would indicate that it might also depend on the environment. I.e. people who are brought up in a schizophrenic household are more likely to become schizophrenic.
             Concordence rates are no 100% and so it cannot purely be down to genes, therefore environmental factors cannot be ruled out. Schizophrenia definitely runs in families, and it is true to say that the more genetically similar relatives are to each other, the higher the concordance rate of contracting schizophrenia.
             The Dopamine hypothesis is biochemical explanation for the cause of schizophrenia. there is almost undoubtedly a genetic influence in determining who is most vulnerable to schizophrenia, brain biochemistry is the effect that inheriting a schizophrenic gene has upon the brain biochemistry itself. It is therefore not the gene itself that causes schizophrenia but the effect the gene has on the causal factor of schizophrenia.
             Dopamine is a naturally occurring substance in our brains and is a neurotransmitter. It is believed that too much dopamine occurring in our brains causes many of the positive symptoms of schizophrenia, including delusions, hallucinations and catatonia. This is either because there is excessive production of the chemical, or because there are not enough receptors so reuptake is limited.


Essays Related to Discuss One or More Biological Explanation of Schizophrenia

1. The Causes Of Schizophrenia

The exact cause of schizophrenia is still unknown and scientists are certain that schizophrenia has more than one cause. There have been dozens of different explanations for the cause of schizophrenia; one states that brain abnormalities and chemicals in the brain contribute to the development of schizophrenia (Hemmings, 1989), while another argues that a person's environment and early experiences within relationships causes schizophrenia (Faraone, 1997). ... This essay aims to outline and compare the genetic, bio-chemical and environmental explanations for the cause of schizophrenia, a...

  • Word Count: 2025
  • Approx Pages: 8
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2. Clinical Cycles of Schizophrenia

For the purpose of this essay, I would be discussing the clinical cycle through the Assessment, Formulation, Intervention and Evaluation of the disorder talked about above. ... At least one of these must be (1), (2), or (3). ... Schizophrenia involves impairment in one or more major areas of functioning which leads to further assessment Criteria B: If a significant quota of the time since the start of the disturbance, level of functioning in one or more major areas, such as work, interpersonal relations, or self-care, is distinctly below the level attained preceding to the onset (or when the ...

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3. Social Influence and Psychopathology

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  • Word Count: 2014
  • Approx Pages: 8
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4. Diagnostic Tools for Psychologists

Furthermore, biological assumptions may impede on the nature of therapy being spontaneous, dynamic and ever-evolving (Yalom, 2001). ... One may query how informed a client actually is upon receiving a psychological diagnosis. ... Moreover, diagnoses may overlook other possible explanations of a disorder as the focus is on the 'here and now' symptoms rather than a comprehensive analysis of client history (Yalom, 2001). ... It may be useful to discuss with the client, what it would mean to receive, or not receive, a mental health diagnosis (Kress, et al., 2010). ... Supposing the DSM ...

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5. Causes Of Political Violence

Each of these desires one thing and one thing only, a "change". ... One of the major topics Sederbergs discusses in explaining violence is the "Killer Ape Thesis", which states that humans are biologically programmed toward violence and that because we are programmed in this way, this is an explanation for the cause of violence. ... Such as anti-social disorder, bipolar disorder, schizophrenia, acute depression, retardation, or autism. ... As people become more and more miserable they will eventually revolt and demand there be a change in the situation. ... One reason behind this ...

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6. Art, Artists and Mental Illness

Creativity is often misunderstood or misinterpreted when discussing its presence in modern society. ... So it is not an option for them for being mentally ill, no one wants to be ill after all. ... Dopamine is a neurotransmitter that carries information from one neuron to another. ... One is through pleasure of invention and exploration, we can find joy in creativity. ... When people talk about art, often the notion of emotion is being discussed. ...

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7. Obsessive-Compulsive Disorder

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8. False Memory Syndrome

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