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How People Know Their Risk Preference

People differ in their willingness to take risks. Recent work found that revealed preference tasks (e.g., laboratory lotteries)—a dominant class of measures—are outperformed by survey-based stated preferences, which are more stable and predict real-world risk taking across different domains. How can stated preferences, often criticised as inconsequential “cheap talk,” be more valid and predictive ...

The Political Economy of Coal in Poland: Drivers and Barriers for a Shift away from Fossil Fuels

Poland is the largest hard coal and second largest lignite producer in the EU, generating around 80 percent of its electricity from coal. Resistance to a reduction in coal production and consumption comes from various actors, namely, coal corporations, unions, parts of civil society and the government – as well as their coalitions. Their opposition centres around the prospect of losing their business, ...

Abuse of Dominance and Antitrust Enforcement in the German Electricity Market

An Auction Story: How Simple Bids Struggle with Uncertainty

Short-term electricity markets are key to an efficient production by generation units. We develop a two-period model to assess different bidding formats to determine for each bidding format the optimal bidding strategy of competitive generators facing price-uncertainty. We compare the results for simple bidding, block bidding and multi-part bidding. We find that even under optimal simple and block ...

Modeling of Combined Heat and Power Generation in the Context of Increasing Renewable Energy Penetration

Combined heat and power (CHP) can achieve fuel efficiencies of up to 90% and is thus considered as economically advantageous and ecologically sound compared to uncoupled power and heat generation. This advantage is exploited only if CHP plants are operated as much as possible at their optimal operation point. Increasing penetration by variable renewable energy sources and more flexible technologies ...

Local Fiscal Policies and Their Impact on the Number and Spatial Distribution of New Firms

We examine the effect of local business taxation and local public good and service (PIGS) provision on the number and spatial distribution of new firms. Testing ground is Germany and we rely on the universe of firm foundations between 1998 and 2006. Methodologically, we estimate fixed effects poisson models coupled with a control function approach. The results suggest that a 1%-decrease in the business ...

Time to Care? The Effects of Retirement on Informal Care Provision

This paper analyzes the impact of women's retirement on their informal care provision. Using SOEP data, we address fundamental endogeneity problems by exploiting variation in the German pension system in two complementary ways. We find a significant effect of retirement on informal care provision, when using early retirement age thresholds as instruments. Heterogeneity analyses confirm the underlying ...

Parental Labour Supply Responses to the Abolition of Day Care Fees

This paper provides evidence that low private contributions to highly subsidised day care constrain mothers from working longer hours. We study the effects of reforms that abolished day care fees in Germany on parental labour supply. The reforms removed private contributions to highly subsidised day care in the year before children enter primary school. We exploit the staggered reform across states ...

Changes in Optimism and Pessimism in Response to Life Events: Evidence from Three Large Panel Studies

Although individuals vary in how optimistic they are about the future, one assumption that researchers make is that optimism is sensitive to changes in life events and circumstances. We examined how optimism and pessimism changed across the lifespan and in response to life events in three large panel studies (combined N = 74,886). In the American and Dutch samples, we found that optimism increased ...

The Rising Longevity Gap by Lifetime Earnings: Distributional Implications for the Pension System

This study uses German social security records to provide novel evidence on cohort trends of the heterogeneity in life expectancy by lifetime earnings and, additionally, documents the distributional implications of this earnings-related heterogeneity. We find a strong association between lifetime earnings and life expectancy at age 65 and show that the longevity gap is increasing across cohorts. For ...