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A political science model based on rational choice used to explain why citizens do or do not vote. The alternative equation is V = pB + D > C. Where for voting to occur the (P)robability the vote will matter "times" the (B)enefit of one candidate winning over another combined with the feeling of civic (D)uty, must be greater than the (C)ost of ...
The mythological judgement of Paris required selecting from three incomparable alternatives (the goddesses shown).. Decision theory or the theory of rational choice is a branch of probability, economics, and analytic philosophy that uses the tools of expected utility and probability to model how individuals would behave rationally under uncertainty.
The rational choice model, also called rational choice theory refers to a set of guidelines that help understand economic and social behaviour. [1] The theory originated in the eighteenth century and can be traced back to the political economist and philosopher Adam Smith . [ 2 ]
Social choice theory is a branch of welfare economics that extends the theory of rational choice to collective decision-making. [1] Social choice studies the behavior of different mathematical procedures ( social welfare functions ) used to combine individual preferences into a coherent whole.
Less formally, each social choice corresponds to the feasible set of laws passed by a "vote" (the set of orderings) under the constitution even if not every individual voted in favor of all the laws. The work culminated in what Arrow called the "General Possibility Theorem," better known thereafter as Arrow's (impossibility) theorem .
For example, from the viewpoint of rational choice theory, the expected gains of voting depend on (1) the benefit to the voter if their candidate wins and (2) the probability that one's vote will determine the election's outcome. [38] Even in a tight election the probability that one's vote decides the outcome is estimated at effectively zero. [40]
Arrow's theorem assumes as background that any non-degenerate social choice rule will satisfy: [15]. Unrestricted domain — the social choice function is a total function over the domain of all possible orderings of outcomes, not just a partial function.
The altruism theory of voting is a model of voter behavior which states that if citizens in a democracy have "social" preferences for the welfare of others, the extremely low probability of a single vote determining an election will be outweighed by the large cumulative benefits society will receive from the voter's preferred policy being enacted, such that it is rational for an “altruistic ...