Volume 88, Number 3, November 2009
|Number of page(s)||6|
|Section||Interdisciplinary Physics and Related Areas of Science and Technology|
|Published online||04 November 2009|
Deformed Zipf's law in personal donation
Department of Systems Science, School of Management, Beijing Normal University - Beijing 100875, PRC
Corresponding author: email@example.com
Accepted: 21 October 2009
The power law or Zipf's law phenomena in human behaviors have been widely observed and attracted intensive attention. In this letter, a new evidence on personal donation is presented and analyzed. A sample of donation to the victims of Sichuan earthquake in 2008 demonstrates that donation distribution has a particular pattern. The upper part is governed by Zipf's law and the lower part exhibits a uniform distribution. We propose a theoretical model in which people's wealth distribution follows a power law, they are willing to donate a random part of their wealth and have preferences on some specific numbers. This model provides us not only a reasonable explanation on the empirical donation pattern but also an effective method to get access to large-scale personal-wealth distributions.
PACS: 89.65.-s – Social and economic systems / 89.75.Da – Social obeying scaling laws / 89.65.Gh – Economics; econophysics, financial markets, business and management
© EPLA, 2009
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