Income distribution in Thailand is scale-invariant

Thitithep Sitthiyot and Kanyarat Holasut

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Abstract: This study examines whether income distribution in Thailand has a property of scale invariance or self-similarity across years. By using the data on income shares by quintile and by decile of Thailand from 1988 to 2021, the results from 306-pairwise Kolmogorov-Smirnov tests indicate that income distribution in Thailand is statistically scale-invariant or self-similar across years with p-values ranging between 0.988 and 1.000. Based on these empirical findings, this study would like to propose that, in order to change income distribution in Thailand whose pattern had persisted for over three decades, the change itself cannot be gradual but has to be like a phase transition of substance in physics.

Date: 2024-02
New Economics Papers: this item is included in nep-hme and nep-sea
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Published in PLoS ONE 18(7): e0288265, 2023

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