• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Outline two Biological explanations into Depression.

Extracts from this document...


Outline two Biological explanations into Depression Depression according to Comer 1995 is a low, sad state in which life seems bleak and its challenge overwhelming. Depression is a mood, or affective disorder in which a sustained emotional state colours a person's perceptions, thoughts and behaviour. Clinical depression occurs when depression becomes hard to break out of, lasts a long time and affects a person's ability to function normally. There are many explanations into depression one of which being the biological explanation. There are two main biological explanations the first being genetics. Research has pointed towards depression being an inherited illness, evidence of such genetic factors come from family studies, twin studies and adoption studies. Family studies point towards the idea that depression runs in the family. ...read more.


Bipolar disorder is said to be more influenced by genetic factors than unipolar disorders (Weissman et al, 1984) As like schizophrenia, neither family nor twin studies show decisive evidence that depression is genetically transmitted as family members encounter similar life events. If family attitude is full of misery then these attitudes are likely to be transferred on to children. It has often been observed that MZ twins are treated more similarly then DZ twins especially when the DZ twins consist of one boy and one girl. Adoption studies provide us with most concrete evidence of differentiating between environment and genes. Research by Wendler et al (1986) traced the biological relatives of adoptee's who had been hospitalised due to severe depression; they found an excessively high occurrence of unipolar depression in these relatives. ...read more.


According to Ayd 1956 the drug resprine, a treatment for high blood pressure, causes depression in some people. This drug is meant to lower the levels of noradrenalin. The drug monoamine oxidase (MAO) inhibitors act as an anti depressant, these drugs work by increasing the level of noradrenalin in ones body. Trycylics another group of antidepressants also work in the same way as MAO by increasing the supply of noradrenalin to the brain. The indoleamine theory suggests that the lack of serotonin could equally be responsible for depression (Golden and Gilmore, 1990). Research has indicated that serotonin plays a similar part to noradrenalin in the cause of depression. Resprine works in the same way as it does with noradrenalin by decreasing the levels of serotonin. MAO inhibitors and trycyclics also increase the levels of serotonin (Amsterdam et al, 1980). The neurons in the brain which use serotonin are in the same location as those that use noradrenalin. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Physiological Psychology section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Physiological Psychology essays

  1. Discuss The Biological Explanation for Depression and Biological Treatments for Depression

    Furthermore another weakness is the research is biologically deterministic. The reason for this is because it suggests that individuals who have low levels of serotonin are determined to suffer from depression in later life.

  2. Sleep and Biological Rhythms revision

    infancy need for brain & body growth + learning / memory consolidation Physiological restoration SWS - immune system + growth hormone correlation & neural control (lifespan differences) REM - brain growth + infant neuroplasticity + correlation with brain maturity e.g.

  1. Can a case be made for the use of homeopathy in the treatment of ...

    Humanistic therapies emphasize the individual's natural tendency toward growth and self-actualisation. Client-centered therapy developed in the 1940's, is based on the assumption that "each individual is the best expert on himself or herself and that people are capable of working out solutions to their own problems"5.2 and the purpose of the therapist is merely to facilitate this process.

  2. The biological perspective - The mind and the body.

    along the length of the cell. Some neurons are myelinated (covered in fat) => speeds up neurotransmission - DENDRITE ~ branchlike projections of a cell which connect with other cells, allowing communication and perception of the environment * Myelin ~ minimizes leakage of electric currents * Multiple sclerosis ~ immune

  1. Teenagers in Depression.

    Loss can be due to death, divorce, separation, or loss of a family member, important friend or romantic interest. Loss can also be subtler such as the loss of childhood, or of a familiar way of being. Gender differences are becoming apparent, with girls having more difficulty with depression.

  2. What are the Risk Factors for Childhood and Adolescent Depression?

    out of a number of risk factors the only statistically significant risk factor was gender, with female adolescents more likely to be depressed and consequently more likely to attempt suicide. One study (Joyner & Udry, 2000, p. 369) has also found a connection between adolescent romance and depression: their results

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work