Evolutionary Explanation
- Created by: Amy
- Created on: 15-01-13 23:31
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- Evolutionary Explanations for Eating Behaviour
- All behaviour is adaptive; some behaviour now is maladaptive - so people explain that evolution is very slow and has not caused to the modern world and explain why our bad eating behaviours were adaptive once
- Developed to be omnivores for a varied diet
- Sweet, salty, fatt foods are valued in an environment where food supply is scarce - vital requirements - reliteavely rare
- Overeat in times of plenty - make survival chance better
- Weight problems now because of fast-food and cars
- now not needed but find it hard to escape from evolutionary pressures
- Overeat in times of plenty - make survival chance better
- Preference for high fat foods
- Fat contains twice as many calories as protein or carbs
- Not easily available so sensible to binge
- Foods are readily available so we find it difficult to keep fat consumption low
- Preference for sweet foods
- Associated with ripeness and quick fix of calories
- Desor et al showed that babies have a preference for sweet tastes over bitter tastes (this is safer however)
- Preference for sweet things may now encourage us to eat high calorie energy high foods like chocolate
- Preference for salty foods
- Essential for body function
- Easy access but hard to find in the wild
- eat crisps
- All behaviour is adaptive; some behaviour now is maladaptive - so people explain that evolution is very slow and has not caused to the modern world and explain why our bad eating behaviours were adaptive once
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