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

Looking at explanations for depression both biological and psychological gives strong evidence that depression is due to either one of the factors or in many places a little of each.

Extracts from this document...


DEPRESSION Looking at explanations for depression both biological and psychological gives strong evidence that depression is due to either one of the factors or in many places a little of each. Looking closer at biological depression the main explanation is the genetic factor. First degree relatives who have mood disorders are more likely to develop one than with people who have relatives without this disorder. Allen (1976) showed a higher average concordance rate for bipolar disorder in MZs (72%) than DZs (14%). For major depression concordance rates are different suggesting that if genetic factors are involved they are different for the two disorders. Data is, however, limited as families and twins share the same environment. ...read more.


Many drugs used to treat medical conditions e.g. TB produce elation that increased levels of noradrenaline and serotonin levels. Teuting et al (1981) found by using urine samples of depressed people, there were lower levels of compounds produced when noradrenaline and serotonin are broken down by enzymes, this suggesting lower than normal activity or noradrenaline and serotonin secreting neurons in the brain. Kety theory states that serotonin plays a role in limiting noradrenaline levels, when this is deficient noradrenaline levels fluctuate leading to both mania and depression. However, antidepressant drugs take time to take effect, therefore suggestion that depression cannot be explained simply by neurotransmitter levels. Also as not everyone responds to the drugs to alleviate depression. Looking at the psychological explanations of depression two main parts of the behavioural and cognitive ideas. ...read more.


An experiment conducted in which dogs were restrained so that they could not avoid electric shocks, appeared to become passively resigned the shocks. Later the dogs were introduced to a new situations were they were allowed to escape, the dogs made no attempt. The behaviour shown is similar to depressed humans. Depressed people, like the dogs, learn from experience to develop expectancy that their behaviour will be fruitless in bringing about change. When people feel helpless to influence their encounters with pleasurable and unpleasurable stimuli they become depressed. However this theory fails to address the issue why some people blame themselves whilst others blame the outside world. Explaining depression as either biological or psychological alone is limited as many explanations do not explain everything. To understand the causes, psychologist have to combine explanations to gain a wide range of answers. Sharmila Kutty 12.7 ...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. Peer reviewed

    Compare and contrast one biological explanation and one psychological of depression.

    3 star(s)

    In comparison, for manic depression the mean concordance rate for MZ twins was 72 per cent, whereas, it was only 14 per cent for DZ twins. In addition, Wendler et al (1986) adoption study also supports the genetic theory.

  2. Outline two Biological explanations into Depression.

    This suggests that some forms of depression, especially the mild ones may be less affected by genes then the more severe ones.

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

    One criticism of the biochemical explanation is that it is difficult to establish cause and effect - is it the chemical imbalance in the brains of depressed people the cause of the depression or the effect of depression. This suggests the chicken and egg problems faced with the biochemical explanation.

  2. Sleep and Biological Rhythms revision

    subjective recall Childhood - * Sleep for about 10 hours with adult EEG + deeper sleep (indicate maturation of thalamalcortical systems) * Increased rate of parasomnias * REM 30% (increase of NREM for brain maturation and increase in activities). Evolutionary adaptive (less physical need for food searching, greater need to

  1. Anxiety Disorders

    is at odds with socially acceptable behavior. It has been suggested that when these conflicts are extremely repulsive or distressing, you can only deal with them indirectly by transferring the conflict to something more manageable such as hand-washing, checking or ordering.

  2. Discuss two or more psychological explanations of one eating disorder.

    � Research suggests that there is a genetic basis among females, due to the 55% concordance rate. Commentary � Methodological issues - studies are based on a small number of participants � Environmental influences - MZ twins may have been brought up very similarly.

  1. Psychological influences in childbearing and midwifery practice - A Rite of Passage: Transition from ...

    Therefore, for the women this could be regarded as the 'reincorporation' of their 'new status' as mothers; or could it be the insidious onset of non-psychotic postnatal depression; which could prevent them from completing their rite of passage as mothers (Barr 2001).

  2. Critically Discuss the Causes of one Psychological Disorder Depression is one of the most ...

    Being worried, anxious or irritable all the time could also be hidden signs of depression. In younger children symptoms may include physical complaints such as stomach ache or headaches, as well as irritability, social withdrawal and changes in eating habits.

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