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Lec 8 food aversion
food aversions and selection EPMs
| Term | Definition |
|---|---|
| food aversions | disgust not informed by experience (eating once dangerous) |
| disease avoidance hypothesis of innate disgust | a food's tendency to evoke disgust correlates with its microbial danger |
| across culture disgusting foods | feces, wounds, vomit (all carry microbial load) |
| women more easily disgusted than | men (pregnancy, babies, lower mass-higher risk) |
| babies have | understanding of disgust expression |
| children have higher risk because they are | developing |
| men take risks because of their higher | reproductive potential |
| conditioned taste aversion | one trial learning, stimulus and response may be separated by 24 hours (getting sick takes time) |
| pregnancy sickness | food aversions (100%), nausea (85%), vomiting (55%) |
| embryo protection hypothesis | pregnancy sickness acts to protect the embryo |
| evidence for embryo protection hypothesis | right timing, aversions to teratogens (caffeine, cruciferous vegetables, meat, alcohol), observed across cultures |
| pregnancy sickness increases | chance of successful pregnancy (three fold fewer miscarriages) |
| pregnancy sickness costs | reduced nutrition and productivity (minimal early pregnancy additional nutritional needs, must have fat to get pregnant) |
Created by:
james22222222
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