There have been significant development achievements in many ASEAN countries over the last 20 years, but the region continues to be characterised by considerable development gaps, particularly in income. This timely book offers a better understanding of these gaps and communicates the very latest strategies that ASEAN member states decision makers and international donors can adopt to narrow the gaps in a practical, policy-relevant way. With the benefit of improved poverty and well-being measurements, this book gives policy makers and scholars in development economics, development policy and Asian studies well-grounded insights into the nature of the development gaps.