Harms and benefits from social imitation

Details Harms and benefits from social imitation Harms and benefits from social imitation

2001-07-11

arxiv.org/abs/cond-mat/0107236v1

Physics

Condensed Matter

Statistical Mechanics

11 pages, elsart style, to appear in the proceedings of NATO ARW on Application of Physics in Economic Modelling, Prague, 8-10

Scientific paper

10.1016/S0378-4371(01)00314-4

We study the role of imitation within a model of economics with adaptive agents. The basic ingredients are those of the Minority Game. We add the possibility of local information exchange and imitation of the neighbour's strategy. Imitators should pay a fee to the imitated. Connected groups are formed, which act as if they were single players. Coherent spatial areas of rich and poor agents result, leading to the decrease of local social tensions. Size and stability of these areas depends on the parameters of the model. Global performance measured by the attendance volatility is optimised at certain value of the imitation probability. The social tensions are suppressed for large imitation probability, but due to the price paid by the imitators the requirements of high global effectivity and low social tensions are in conflict, as well as the requirements of low global and low local wealth differences.

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