Lecture3PoliSci274Jan28 - PoliSci 274 Lecture 3...

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PoliSci 274 Professor Scott Gehlbach Lecture 3 1/28/09 Today -Condorcef paradox Redistribution Arrow’s theorem 1) Opening Experiment a) Assumption i) 3 candidates…No political party (1) Preference Choices (a) Clinton P Obama P McCain – Elizabeth (b) Obama P McCain P Clinton – Rebecca (c) McCain P Clinton P Obama – Joe (2) The three of them must come up with a majority decision (a) Clinton is status quo (If they can’t come up with an agreement) 2) Condorcet Paradox a) Condorcet 18 th century mathematician who notices paradox between individuals’ preferences in which there collective preferences can be cyclical or non-transitive. i) Positive statement – what is ii) Normative statement – what should be 3) Arrow’s Theorem a) Kent Arrow from Stanford in 50’s approached Condorcet Paradox in voting i) Looked at tradeoffs….won noble economics prize ii) View Handout (course website) (1) Arrow’s General Possibility Theorem (a) Individual Preferences (i) Rationality Assumption: Every individual in the group has preferences
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This note was uploaded on 04/06/2009 for the course POLI SCI 274 taught by Professor Gehlbach during the Spring '09 term at University of Wisconsin.

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Lecture3PoliSci274Jan28 - PoliSci 274 Lecture 3...

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