Biological Approach overview

a overview of the biological approach. I am in my first year of A levels and created this to ensure i knew everything i needed to about this approach. My peers also found this useful and this is my reason for sharing this.

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  • Created by: Kasey
  • Created on: 09-02-15 13:44
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Exam questions that will be asked for this approach:
Question Available marks
Outline two assumptions of the biological approach 4 marks
Describe the theory of Selye's General Adaption Syndrome 8 marks
Describe how the biological approach has been applied in either psychosurgery or 12 marks
Evaluate two strengths of the biological approach 6 marks
Evaluate two weaknesses of the biological approach 6 marks
Explain and evaluate the methodology used by the biological approach 12 marks
The main assumption of the behaviourist approach is that…read more

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The temporal lobes are responsible for recognizing and processing sound, understanding
and producing speech and various aspects of memory. Injury to the temporal lobe may
affect hearing, language, recognizing faces and processing sensory information.
The occipital lobe is responsible for receiving and processing visual information and
contains areas that help in the perceiving shapes and colours. Injury to the occipital lobe
may affect visual distortion, perception of size colour and shape.
The cerebellum controls balance, movement and co-ordination.…read more

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Supporting evidence
Phineas Gage (1848)
Phineas gage was a responsible family man. A Tamping iron shot through his head when at
work at an angle. The tamping iron was so hot that it had quarterized the wound straight
away which essentially saved his life. However, his old self has died and he now had a new
reportedly new personality. He had abandoned his family, gambled and drank of which
none were activities he had done before.…read more

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A CAT scan of a schizophrenic boy and his twin brother showed that the twin with Schizophrenia
had larger ventricles than the one without. This was a reliable study as the twins have 100%
similar genetic makeup. The issue that was raised is that we cannot confirm whether it is larger
ventricles causing schizophrenia, or schizophrenia casing the larger ventricles.
Selyes General Adaption syndrome
Selye's general adaption theory describes how the body responds to stress.…read more

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These responses reflected that the body had adapted to cope, and that there was a range of
responses (hence it being entitles a syndrome)
He split his theory into three stages:
Stage 1: Alarm reaction
Stage 2: The Resistance stage
*The hypothalamic Pituitary Adrenocortical axis (HPA) is
heavily involved in the first two stages as it governs the
physiological response to stress.…read more

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Stage 2: The exhaustion stage
Chemotherapy is the use of chemicals and drugs to treat the symptoms of mental illness for
therapeutic reasons. It is NOT just used to cure cancer.
Behaviour is a result of chemical (neurotransmitters) in the brain.
Abnormal behaviour is due to an imbalance of neurotransmitters.
Chemotherapy is used to provide help for the imbalance and to make the brain function properly.
Drugs work in three main ways:
1. Blocking receptors
2. Mimicking neurotransmitters at the receptors site
3.…read more

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Distorted thoughts based on the hallucinations or delusions
Abnormal behaviour in response to the other symptoms
Schizophrenia is associated with high levels of dopamine in the brain. However, it is unsure
whether high levels of dopamine cause schizophrenia, or whether schizophrenia causes high
levels of dopamine. Whatever the case, using anti-psychotic drugs can lower dopamine levels
and this fixes the symptoms associated with schizophrenia. This works by blocking the
receptors. An example of a drug that does this is chlorpromazine.…read more

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Case study: Arroll et al (2005) and Rozzini et al (2010)
Arrol et al conducted a meta-analysis on the effectiveness of anti-depressants compared to a
placebo and found that SSRI'S eliminated depressive symptoms in 60% of cases compared to 40%
of the placebo group, which suggests that altering neurotransmitter levels using drugs can be
effective in treating depression.
Rozzini et al found that the use of SSRI's was effective in the treatment of symptoms in
Alzheimer's patients.…read more



not very useful for A Level


useful thank you! need answers to check i am right? 

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