Economic theories of managing renewable resources, such as fisheries and forestry, traditionally assume that individual harvesters are perfectly rational and thus able to compute the harvesting strategy that maximizes their discounted profits. The current paper presents an alternative approach...

This discussion paper resulted in a publication in the <A href="http://www.sciencedirect.com/science/article/pii/S0095069612000927">'Journal of Environmental Economics and Management'</A>, 2012, 64(3), 342-363.<P> Optimal climate policy is studied in a Ramsey growth model with exhaustible oil reserves, an infinitelyelastic supply of renewables, stock-dependent oil extraction...</p></a>

Champions of sustainable growth often call for more durable production technologies with less capital depreciation. As investment in more durable capital is encouraged by lower interest rates, we investigate whether policy makers can steer the economy towards a path with low interest rates in...

Critics of modern macroeconomics often raise concerns about unwarranted welfare conclusions and data mining. This paper illustrates these concerns with a thought experiment, based on the debate in environmental economics about the appropriate discount rate in climate change analyses: I set up an...

This paper explores the interaction between retirement flexibility and portfolio choice in an overlapping-generations model of a closed economy. Retirement flexibility is often seen as a hedge against capital market risks which justifies more risky asset portfolios. We show, however, that this...

This discussion paper resulted in a publication in the <A href="http://onlinelibrary.wiley.com/doi/10.1111/j.1468-0351.2011.00425.x/abstract;jsessionid=F64011DF99B22B6E2BF33FDA1C47DE9C.f04t03">'Economics of Transition'</A>, 2011, 19(4), 639-666.<P> Whether fiscal policy is sustainable depends on a government's future revenue and expenditure streams, both of which are highly uncertain. In commodity-rich countries, this problem is...</p></a>

This discussion paper led to a publication in the <A HREF="http://www.sciencedirect.com/science/article/pii/S0167268109000109">'Journal of Economic Behavior & Organization'</A>, 2009, 70(1-2), 374-388.<P> In this paper we analyze a large sample of individual responses to six lottery questions. Wederive a simultaneous estimate of risk aversion γ and the time preference discount...</p></a>

This paper assesses the transmission of fiscal policy shocks in a New Keynesian framework where government expenditures contribute to aggregate production. It is shown that even if the impact of government expenditures on production is small, this assumption helps to reconcile the models'...

Micro data are used for the US over the period 1968 - 1992 to estimate time-varying specifications for the conditional variance of earnings of individual households. Specifications estimated are standard and quadratic ARCH and GARCH processes. The cross-sectional mean of the estimated...

This discussion paper resulted in an article in the <I>Journal of Macroeconomics</I> (2010). Volume 32(1), 169-184.<P> We investigate the importance of aggregate and consumer-specific or idiosyncratic labour income risk for aggregate consumption changes in the US over the period 1952-2001. Theoretically,...</p></i>