The book in details is about "Critical Study of Foreign Direct Investment on Economic Development in selected Asian Developing countries with special reference to Telecom Sector (since 1991-2010)" The book provides three empirical case studies of India, Malaysia and China. The main aim is to analyze the responsiveness of GDP to changes in FDI in Telecom sector over the study period (1990-2010). In addition this book analyses the responsiveness of two main indices to changes in amount of FDI in Telecom sector, the two main indices are: Performance Index of FDI and FDI Potential Index.