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Eating Behaviour
Attitudes to food:
Expectancy Theory;

Expectancy theory explains how decisions may be made in different situations and can be applied
to eating behaviour.
The evaluation of any situation or object comprises of two factors:
o The perceived likelihood that the object has certain attributes or may lead to…

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o When children asked about beliefs and eating behaviour (made food journey over a week)
their fruit/veg consumption increased (Gratton et al, 2007) - Social desirability.
Predisposed to choose high energy foods, so puts fruit/veg at disadvantage (Steptoe and Wardle,
2004)
Low self-esteem is linked to impulse buying and snacking…

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o Lateral hypothalamus (LH) ­ when stimulated it produces hunger and when damaged
results in dramatic reduction in food intake
o Ventromedial (VMH) ­ triggers a sense of fullness thereby reducing appetite.
3. Role of stomach ­ hunger was largely determined by hunger pangs (muscle contractions of an
empty stomach.…

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Preference for sweet foods by:
o Grill and Norgen (1973) found lab rats accept sweet foods in almost reflex like way that
required no decision making.
o Bell et al (1973) Inuit Indians that do not have sugar in their diet, very quickly choose to eat
it when it became…

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Obesity can run in families and therefore shows that there may be biological factors that effect
obesity.
Twin studies are a way of testing this explanation of obesity:
o Bouchard et al (1990) ­ overfed 12 pairs of identical twins. Found that there were 3x more
similarity in weight gain…

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