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

The roll of stress in the development of ulcers.

Extracts from this document...


2/10/02 The roll of stress in the development of ulcers Brady study (1958) * Brady linked high levels of stress to increased hormone production and the development of ulcers (Perforated ulcer). * Placed a monkey in a restraining chair and taught them to press a lever. * They had an electric shock every 20 seconds unless they pressed the lever within that time. * There were 2 levels of stress: * Physical stress - from getting the shock * Psychological stress - from having to press the lever * The experiment came to a halt when all his monkeys died, he found out they all died of ulcers and had high levels of gastro intestinal hormone * He had to test what gave the monkeys the ulcers * Next they used 2 monkeys in separated chairs * 1 ...read more.


Evaluation * Confirmed that ulcers were related to stress Weiner et al (1957) * He did a study on army recruits * He put them into 2 groups o Under secreting of digestive hormones o Over secreting of digestive hormones * After 4 months of intensive and stressful training, 14% of the over secretors had formed ulcers, non of the under secretors formed ulcers * Because not all of them got a ulcer, then individual differences must have an effect Criticisms: * The monkeys were not randomly selected as the executive monkey was selected because it was good at learning * Marshal et al proved Helicobacter caused stomach ulcers (he infected himself with this and got the stomach ulcers * The problem with this account of stress was that it ignores the fact that the stress response often depends somewhat on the type of stressor. ...read more.


The general adaptation syndrome Most of our emotional reactions have evolved because they are adaptive and functional in some way. It has been argued that stress has a range of negative effects, e.g. making people unwell. Why then do we continue to have a stressful reaction if it has harmful effects, surely this would suggest that the stress response is maladaptive rather then adaptive? Han Seyle (1950) quoted that the stress response is adaptive in the short-term because it helps us to cope with emotional distress, prolonged stress is very damaging. He studies first of all rats, and then patients in hospital with various injuries and illnesses and noticed they all seemed to show a similar patterns of bodily response. He called this pattern the general adaptation syndrome. ...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 Developmental 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 Developmental Psychology essays

  1. Psychology - Stress

    There is a lot of evidence to suggest that illness's can be caused by stress. Frese (1985) stated that between 50 and 70 % of all physical illnesses are caused by stress. Many different psychological and physical strategies have been put forward to help cope with stress.

  2. Task1 Counselling 1aPhysical signs and symptoms of stress

    In addition Bandura also introduced several other important concepts. Within this perspective humans are characterised in terms of five basic and unique capabilities, symbolising, vicarious, forethought, self-regulatory, self-reflective. It is these capabilities that provide humans with cognitive means by which to determine behaviour.

  1. Job stress

    have argued that women are likely to experience stress because they are likely to seek professional help. Being a woman means that one's hormones are responsible for higher vulnerability to stress . According researchers many hormonal factors contribute to the increase rate of stress in women, particularly such factors as menstrual cycle change, pregnancy, miscarriage etc.

  2. Theme of the novel Roll of Thunder

    The children are all angry at this and promise to take revenge. They are all frustrated especially Little Man. Stacey, the eldest of them all, is the one who plans for the revenge. He asks them to meet in this place where they were forced to go in the mud during lunch time.

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