120_lecture7_fall09

120_lecture7_fall09 - ECO 120, Lecture 7 Jon Robinson UCSC...

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Unformatted text preview: ECO 120, Lecture 7 Jon Robinson UCSC October 15, 2009 Jon Robinson (UCSC) ECO 120, Lecture 7 October 15, 2009 1 / 37 Exam exam on October 22nd similar format to problem sets 3 practice exams posted with solutions online expected 1/4-1/2 of exam to measure really reading and understanding the material. You will have trouble passing the course if you can&t answer reading questions. Not the minor details, but the substance of the paper: i.e. how does Duo evaluate the eect of the school construction program? Jon Robinson (UCSC) ECO 120, Lecture 7 October 15, 2009 2 / 37 Edward Miguel and Michael Kremer, Worms intestinal helminths (parasitic worms) infect 1/4 of the world&s population these include hookworm, roundworm, whipworm, and schistosomiasis specically: hookworm round worm each infect 1.3 billion people whipworm: 900 million schisto: 200 million light infections might not have serious symptoms Jon Robinson (UCSC) ECO 120, Lecture 7 October 15, 2009 3 / 37 Background on Worms but some have heavy infections, some symptoms of which are anemia protein-energy malnutrition abdominal pain listlessness schisto: enlargement of the liver and spleen (distended bellies you see in poor countries, though this in part due to poor nutrition) scope for intervention: can be treated e/ectively in a single dose albendazole for geohelminths (hookworm, roundworm, whipworm) praziquantel for schisto drugs might cause birth defects, though, so not given to girls of child-bearing age one problem is that people are constantly infected and reinfected, so they probably need to be treated pretty regularly price: cost $1.49 through ICS (counting in the nurse and FO team, etc.), and was done for $0.49 in Tanzania in a government program Jon Robinson (UCSC) ECO 120, Lecture 7 October 15, 2009 4 37 Spread of Worms how are worms spread? geohelminths (hookworm, roundworm whipworm) live in the soil and enter the skin if you walk barefoot schisto lives in a fresh-water snail and is spread through water essentially this means that people are defecating outside (not in a latrine) or near or in fresh water we& ll see that infection will be higher for people that don&t have latrines, don&t wear shoes, etc. Jon Robinson (UCSC) ECO 120, Lecture 7 October 15, 2009 5 / 37 Externalities in this way, one person&s behavior a/ects everybody else&s probability of getting infected treating either worm involves major positive EXTERNALITIES this means that if i get treated for worms, it will benet other people since they are less likely to get worms from me i.e. the lake will now be cleaner and so we&re ALL better o/ why isn&t the market the best place to get people to use deworming drugs?...
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120_lecture7_fall09 - ECO 120, Lecture 7 Jon Robinson UCSC...

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