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

A2 Psychology Unit 3 Eating Behaviour: Evolutionary Explanations Of Anorexia Nervosa Notes

Extracts from this document...

Introduction

A2 Psychology Unit 3 Eating Behaviour: Evolutionary Explanations Of Anorexia Nervosa Notes What You Need To Know: · Evolutionary Explanations, for one eating disorder: Anorexia Nervosa. Evolutionary explanations of anorexia nervosa: Pseudopathology (Crawford, 1998) · A pseudopathology is an illness brought about by an entirely intact adaptive mechanism responding in a modern environment it was not designed for. · In terms of evolution, women strive to be attractive to men. In the past this will have meant being able to provide and carry children; now it means being thin. · The result is that there is an adaptive advantage to being thin. ...read more.

Middle

· Therefore, restricting food intake, denial of starvation and hyperactivity could help migration. · Whilst no longer an adaptive response, a very low body weight (e.g. through dieting) may make the body respond as if threatened by famine, and result in anorexia. Controlled infertility (Wasser and Barach, 1983) · Whilst on the face of it an evolutionary disadvantage, stopping menstruation may actually be adaptive. · Women invest a lot in the relatively few children they can have in their lifetime, so that having one in a time of famine is very risky indeed. · Infertility brought about by controlled food intake might have allowed our ancestors to control when they produced children. ...read more.

Conclusion

Caring-for-kin hypothesis (Voland and Voland, 1989) · Anorexics are often very caring and protective of their own families. · Anorexics women often come from extremely protective (even over-protective) families. Being anorexics and therefore infertile produces an additional family helper, providing for advancement of the genetic line vicariously through other children in her family. Evaluation of evolutionary explanations: Given the importance of survival and reproduction in evolutionary theory, eating disorders are puzzling conditions since both are threatened by these disorders. Evolutionary explanations are difficult to prove or disprove scientifically. It is not clear whether one evolutionary explanation is correct or whether they all are; and eating disorders could occur for a number of evolutionary reasons - this is a weakness of the approach. ...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. Explanations of anorexia nervosa

    i.e., the reported biological abnormalities of anorexics may be as a result of the disorder, not a cause of it. Furthermore, biologicalexplanations of anorexia - genes or hypothalamus - do not currently offer the possibilityfor treatment; the other causal (aetiological)

  2. Anxiety Disorders

    This circuit relays information from a part of the brain called the orbitofrontal cortex to another area called the thalamus and includes other regions such as the caudate nucleus of the basal ganglia. When this circuit is activated, these impulses are brought to your attention and cause you to perform a particular behavior that appropriately addresses the impulse.

  1. Unit 1 psychology revsion notes (memory, attachment, research methods)

    Day-care aggression Campbell * Under 3 ½ years more negative interactions when they had long days in day-care National institute of child health and development * Large sample 4 ½ years * Collected reports about children from parents, teachers and carers * More time in day-care the greater problems they

  2. AQA A2 Psychology Unit 3 Aggression: The Evolutionary Explanations of Human Aggression Notes

    * Griskevicius et al (2009) have shown that sex differences in aggression exist for both direct physical aggression (men exhibit more) and for indirect, verbal and psychological aggression (which females make more use of).

  1. Discuss Biological Explanations of Anorexia Nervosa

    Therefore, there would be no obvious steps that could be taken to try and prevent these anorexic traits from being passed on. Research into genetics and neurobiology are conventionally scientific as research is replicable and investigates working hypotheses with quantitative data.

  2. Notes for A2 Psychology Unit 3 Eating Behaviour The Role of Neural Mechanisms

    Conclusion: Lesions in the VMN cause hyperphagia (overeating) and obesity, so the VMN must play a role in satiation. Evaluation: This was a very small sample using only one breed of rat, so the findings can't be generalised. Also, other tissues surrounding the VMN might have been damaged when the

  1. A2 Psychology Unit 3 Eating Behaviour: Psychological Explanations Of One Eating Disorder - Anorexia ...

    * Polivy and Herman (2002) suggested that where a person feels their life is `out of control` in some way, controlling themselves and their body and weight provides them with a sense of control. Individuals therefore derive emotional gratification from anorexia. Cognitive factors * Anorexia is associated with obsessive thoughts and rigid thinking patterns.

  2. A2 Psychology Unit 3 Eating Behaviour: Biological Explanations And Evolutionary Explanations Of Obesity Notes

    Results: There was a strong relationship between the weight of the adoptees and that of their biological parents. There was no relationship between the weight of the adoptees and their adoptive parents in any of the weight classes. Conclusion: Genetic influences have an important role in determining adult weight, whereasenvironment seems to have little effect.

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