This paper shows that dynamic inefficiency can occur in dynamic general equilibrium models with fully optimizing, infinitely-lived households even in a situation with underinvestment. We identify necessary conditions for such a possibility and illustrate it in a standard R&D-based growth model....

Although there exists a vast literature on convergence and divergence of income levels across countries or regions at the aggregate level, there is only little work on convergence and/or diver- gence processes of productivity and wage levels at the more disaggregated industrial level. These are...

This paper addresses the limitations of Modern Money Theory (MMT) as a guide to development policy. We explore two central questions on this topic: whether MMT policies 1) ought to be implemented in low- and middle-income economies and 2) can be implemented. In relation to the first question, we...

Although the mere observation of saving aggregates might have us believe differently, this article argues that Singapore's sustained high saving performance was far from extraordinary once the country's particular circumstances are econometrically controlled for. Singapore's saving performance...

We study aggregate capital dynamics in an investment model with idiosyncratic productivity shocks, fixed capital adjustment costs, and irreversibility driven by a wedge between capital purchase and resale prices. We derive sufficient statistics capturing the role of investment frictions on...

We estimate the effects of stock market volatility on the growth rates of durable consumption, non-durable consumption and invest- ment using post-war US data. Our results indicate that high levels of stock market volatility exert large adverse effects on the growth rates of investment and...

We study the development of bank lending in the U.S. after four large jumps in uncertainty using an event study approach. We find that more liquid banks reduce lending less than banks with smaller liquidity ratios after a surge in uncertainty. Lending by smaller banks is also less responsive to...

This paper revisits Keynes's (1930) essay titled "The economic possibilities for our grandchildren." We discuss the three broader trends identified by Keynes that he expected would come to characterize the socio-economic evolution of advanced countries under individualistic capitalism: first,...

The original Keynesian paradigm differs from the Neoclassical Synthesis and even more so from the New-Keynesian approach. In this paper, a modern framework for the original Keynesian paradigm is presented. It will highlight the key elements of the paradigm. A model is developed to determine...

We study general dynamic programming problems with continuous and discrete choices and general constraints. The value functions may have kinks arising (1) at indifference points between discrete choices and (2) at constraint boundaries. Nevertheless, we establish a general envelope theorem:...