Abnormality - Explanations Flashcards
What are the 2 key assumptions of the BIOLOGICAL approach to abnormality?
- All behaviour, normal and abnormal, is rooted in our biology, in particular our brain
- Abnormality is an illness or disease and is often referred to as the medical model
What are the 3 features/causes of the BIOLOGICAL approach?
- Genetics
- Imbalance in brain chemistry
- Brain structural abnormality
Explain ‘brain damage’ in terms of the BIOLOGICAL explanation to abnormality
That the structure of the brain effects behaviour, and once the disease / brain damage has caused mental health, there is little to be done to cure it.
Give an example of how brain damage can lead to abnormality in regards to the BIOLOGICAL approach
Alzheimer’s disease is a type of dementia caused by a malformation and loss of cells in a number of areas of the nervous system
Explain ‘genetics’ in terms of the BIOLOGICAL explanation to abnormality
Some people may be genetically more at risk than others of developing a mental disorders (but so far this only relates to conditions such as schizophrenia and bipolar depression.
Explain ‘biochemistry’ in terms of the BIOLOGICAL explanation to abnormality
Neurotransmitters are thought to be out of balance in nervous systems of those with psychological disorders
Give an example of how biochemistry can lead to abnormality in regards to the BIOLOGICAL approach
Schizophrenia is thought to be associated with excess dopamine, and depression with decreased availability of serotonin
Give 2 ways in which genetic explanations are investigated
- Twin studies
2. Adoption studies
How do twin studies work?
They compare concordance rates of MZ twins (identical) and DZ twins (non-identical) for specific disorders.
What is the difference between MZ twins and DZ twins?
MZ twins share 100% genes and the same environment, whereas DZ twins share 50% genes and the same environment
How do adoption studies work?
They separate genes and the environment: adopted children who develop mental disorders are compared with biological and adopted parents. Genetic abnormality would expect the adopted child to inherit abnormality from the biological parent, despite not sharing the same environment.
What is an evaluative point about Twin studies?
It hard to distinguish between the genetic effect and the environmental effect; the more genetically similar twins are, arguably the more environmentally similar they are.
Name and explain the findings of a piece of research evidence in support of the BIOLOGICAL approach in reference to genes
McGuffin et al
Found 46% concordance in MZ twins compared to 20% in DZ twins for depression (shows that genes are a component in depression)
Name and explain the findings of a piece of research evidence in support of the BIOLOGICAL approach in reference to brain structure
Goldstein
Found that when comparing schizophrenic patients with healthy adults using a matched pairs design, several areas of the cortex were significantly smaller than the control group.
List 3 weaknesses of the BIOLOGICAL approach
- Issue of cause and effect (brain chemistry)
- Stigma
- Reductionist
Explain the issue of cause and effect in regards to the BIOLOGICAL approach to abnormality
You can’t determine that the biochemical imbalance causes the disorder, or if the disorder causes the imbalance (don’t know what came first)
Explain Stigma in regards to the BIOLOGICAL approach to abnormality
The biological model labels people with mental illnesses as having a ‘disease’ resulting in them being treated differently due to people being afraid of that illness
Explain reductionism in regards to the BIOLOGICAL approach to abnormality
Reduces abnormal behaviour to biological factors, when in reality there are other factors such as social factors or life events
What are the 3 key features to the PSYCHODYNAMIC approach to abnormality
- The model of the personality
- Stages of psychosexual development
- Defence mechanisms
What is the ID in the PSYCHODYNAMIC approach?
The unconscious, instinctive aspect of personality.
Demands satisfaction and will not tolerate delay or wishes
Based on pleasure principal present from birth
What is the Ego in the PSYCHODYNAMIC approach?
Based on reality principal
Partly conscious, partly unconscious
Rational and calculating, developing through life experiences
Learning of consequences of actions
What is the Super Ego in the PSYCHODYNAMIC approach?
Based on morality principal
Voice of parents/society, formed from our experiences of restriction
What age does the Ego develop?
3 years
What age does the Super Ego develop?
5 years
Define a strong Ego
A well adjusted person who can cope with demands of the ID and Super Ego
Define unchecked ID impulses
Where ID impulses might be expressed in a destructive or immoral way
Define a too powerful Super Ego
Where the rigidity of the superego might overpower the ID so that the person is deprived of social pleasure
Give 3 example of psychological disorders that could be caused by unchecked ID impulses
- psychopath
- rapist
- exhibitionism
Give an example of a psychological disorder that could be caused by a too powerful super ego
OCD
What are the key experiences of the oral stage in the psychosexual stages of development?
Sucking initially, then as teeth develop, biting.
Breast feeding