The Biological model of abnormality and treatments

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1. What points can be used evaluate Heston's research?

  • Interviews were used to collect the data which is a naturalistic way but they can be affected by social desirability bias
  • It has a high ecological validity as the meta-analysis was carried out on field studies, there must be other factors involved as not all the second twins developed the disorder and family environment may play a part.
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2. What is meant by infection being the cause of psychological disorders?

  • Disorders are caused by infection such as General Paresis, a condition involving delusion and moodswing which result in death. It is caused by Syphilis
  • Accidental brain injury may caused psychological disorders such as in the case of Phinaes Gage
  • Too much or too little of a particular neurotransmitter may produce psychological disorders such as an increased level of dopamine being linked to Schizophrenia

3. According to the biological model, what are the main 4 possible causes of psychological disorder?

  • genetics, synapses, infections and brain injury
  • genetics, neurotransmitters, infection and brain injury
  • genetics, neurotransmitters, infection and brain scans

4. What did Gottesman discover?

  • Having an identical twin with Schizophrenia gave you a 48% chance of getting the disease, this reduced to 17% in non-identical twins
  • 5/47 of the children whose biological mothers had Schizophrenia developed the disease as opposed to 0/45 in the control group

5. What is meant by brain injury being the cause of psychological disorders?

  • Accidental brain injury may caused psychological disorders such as in the case of Phinaes Gage
  • Faulty genes are known to cause some diseases that have psychological effects such as Huntington's disease
  • Too much or too little of a particular neurotransmitter may produce psychological disorders such as an increased level of dopamine being linked to Schizophrenia

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