It has been argued that concave models exhibit less ‘endogeneity of growth’ than models with increasing returns to scale. Here we study a simple model of factor saving technological improvement in a concave framework. Capital can be used either to reproduce itself, or, at some additional...

Human Capital, Trade and Public Policy in Rapidly Growing Economies argues that only two centuries ago, no society had ever enjoyed sustained growth in living standards. The contributors to this book aim to discover why the world today exhibits a predilection for perpetual self-improvement. In...