Eating Behaviour Essays

Outline and evaluate biological explanations of one eating disorder An meet at explaining anorexia nervosa (AN) has been explained by Guisingers (2003) adapted to flee deficit hypothesis (AFFH). AFFH fits under the evolutionary approach, and is also a biological explanation. Guisinger proposes that AN is part of behaviours accommodative in the environment of the evolutionary adaptation (EEA). In hunter-ga on that pointr society, there would hit been prolonged periods of shortage and it would have been necessary to drop dead on regularly when fare resources were exhausted. To cope with this, people would have keep active winnow out lack of energy. Guisinger draws a parallel with anorexics, who tend to have graduate(prenominal) natural process levels and restlessness, despite the typical result to starvation existence inactiveness and depression. Therefore, she hypothesised, high levels of activity and a denial of hunger, necessary to mig treasure in times of famine, and ar explanation of AN today. enquiryers such as Holland et al. (1984), however, have claimed that inheritables are the outgo biological explanation of AN. Research into transmitteds role tends to make love in the form of equal studies. Holland et al.s is perhaps the approximately nonable. They researched the contractable link by comparing MZ and DZ jibe, where one pair of from each one check was suffering from AN.

They hypothesized that as MZ match are genetically identical, if AN characterised exclusively genetic, it should be a dual-lane trait. Holland et al. found a capital of New Hampshire pass judgment of 55% for MZ twins and of whole 7% for DZ twins. The significantly higher concordance rate for MZ twins suggests a genetic involvement in anorexia nervosa, but clearly it is non the only component in place. If it was in all genetic, the concordance rate would sure enough have been 100%. two biological explanationsevolutionary and genetichave a spile of support, but they are not without their limitations. The main problem with twin studies such as Holland et al.s is the small number of participants...If you demand to get a broad(a) essay, order it on our website: Orderessay

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