A2 Psychology Eating Behaviour Essays

A2 Psychology Eating Behaviour Essays-56
Biological explanations for AN can also be criticised for being biologically reductionist.By oversimplifying AN in terms of genes and neurotransmitters, the social context within which it develops has not been considered.

Biological explanations for AN can also be criticised for being biologically reductionist.By oversimplifying AN in terms of genes and neurotransmitters, the social context within which it develops has not been considered.

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You will be tested on material from lectures, class and tutorial discussions, as well as recommended readings. Many of the examples are from evolutionary biology, but we are planning to add more biology experiments later on.

- - - - - - - - - Question 27: (2 marks) One strength of restraint theory is that there is evidence to support it.

Wardle and Beales randomly allocated obese women to 3 groups (diet, exercise or control) and found that the diet group (restrained eaters) ate more than either of the other two groups.

Neural explanations for AN focus on serotonin and dopamine. gave amphetamines to participants to increase the release of dopamine.

They found that healthy participants reported euphoria (pleasure), but AN patients experienced anxiety.This suggests that individuals with AN might restrict their eating to try to reduce their anxiety levels.Evidence to support this explanation comes from Kaye et al., who found that levels of homovanillic acid (a dopamine metabolite) are lower in those recovering from AN compared to control participants.You can also follow @tutor2u Psych on Twitter, subscribe to our You Tube channel, or join our popular Facebook Groups.Much cheaper & more effective than TES or the Guardian.However, the concordance rate for MZ twins is not 100% which suggests that other factors must also be involved.In addition MZ twins may be treated more similarly than DZ twins and this may help to explain the higher concordance rate.-Students are given an example section from "Discuss the evolutionary theory to food preference" and are then asked to finish the evaluative points. Homework: Students use all the rules to write "Outline and evaluate the role of neural and hormonal mechanisms in eating behaviour.Question 26: (2 marks) Restraint theory is a cognitive theory for obesity.Evidence to support the genetic explanation comes from Holland et al., who found a concordance rate of 56% for MZ and 5% for DZ.MZ twins share 100% of their genes, compared to DZ twins who only share 50% of their genes, so this suggests that genes must have some influence on the development of AN.

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