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The remarkable development in ICT (Information and Communication Technology) was observed in the past decades that it has an increasing impact on economic and social activities in the world. ICT have had a significant role in the economic growth for developed and developing countries. The countries have been very dynamic in recent years in East Asia、 which is one of the most important geographic regions based on ICT. Focusing on Gross Domestic Product (GDP) per capita income distributions of East Asian countries in this study、 it is aimed to show that ICT and its components are closely linked with socio-economic components in macro and micro levels. Some important findings are observed that there has been regional convergence as Beta-convergence and Sigma-convergence after 1992 among East Asian countries. A necessity appeared to focus on how ICT can affect GDP per capita convergence among countries. ほか ISBN 978-4-904742-09-9