Regional Convergence and the Role of the Neighbourhood Effect in Decentralised Indonesia

More than a decade since Indonesia's radical decentralisation process commenced, this article examines whether the economic performance of neighbouring regions – the neighbourhood effect – can determine the speed of regional convergence. The results suggest that the inequality of gross regional domestic product per capita, as indicated by the Williamson index of regional inequality, may increase slightly in times of insignificant estimated speeds of convergence – especially because of the growth of Jakarta. In contrast, changes in the Human Development Index numbers for Indonesia indicate that regional convergence is taking place, although its speed is decreasing. The neighbourhood effect could be significant in both cases, but it has had little effect on the speed of convergence