Merger control plays a central role in competition policy. When assessing proposed mergers, Competition Authorities should consider its impact on all relevant markets. Large mergers between manufacturers typically impact competition, thus requiring the approval of Competition Authorities. Divestitures are often a condition of merger approval. This report investigates the effectiveness of implementing ...
The German economy began recovering at the beginning of 2024 and has developed better than initially expected. A sharp rise in construction investment, albeit more of a flash in the pan as a result of mild winter weather, along with strong goods exports helped the economy onto its recov¬ery path and masked the disappointing development of private consumption, which sank unexpectedly. However, consumer ...
This paper analyses the pass-through rates and their determinants of the temporary German fuel discount in 2022 at its start and its termination. Based on a unique dataset of fuel station characteristics and prices, we employ a Regression Discontinuity in Time (RDiT) methodology to estimate heterogeneous pass-through rates. Our main contribution is to identify the impact of horizontal and vertical ...
People have a need to form and maintain fulfilling social contact, yet they differ with respect to with whom they satisfy the need and how quickly this need is deprived or overly satiated. These social dynamics across relationships and across time are theoretically delineated in the current article. Furthermore, we developed a questionnaire to measure individual differences in three aspects of such ...
This paper examines whether biased income expectations due to overconfidence lead to higher levels of debt taking. We show suggestive evidence for a link between overconfidence and borrowing behavior in a representative survey of German households (German Socio-Economic Panel–Innovation Sample [GSOEP-IS]). This motivates a laboratory experiment to study causality behind these effects. In two experiments, ...
Diese Dissertation behandelt die Herausforderungen der Dekarbonisierung im Energiesektor aus verschiedenen Perspektiven mit unterschiedlichen Methoden. Kapitel 1 liefert Hintergrund und Motivation. Kapitel 2 analysiert die Beziehung zwischen geografischer und zeitlicher Flexibilität im Strommarkt in einem Szenario mit 100% erneuerbaren Energien in zwölf mitteleuropäischen Ländern. Unter Anwendung eines ...
To ensure continued survey participation and data quality, the survey landscape must adapt to the changing social reality, especially with regard to mobility and digitalization. This requires survey researchers to move from one-size-fits-all solutions to a data collection strategy that takes into account people's communication habits, abilities and preferences. For several decades, computer...
Individuals are embedded in social contexts: although many large-scale, cross-thematic social science surveys already attempt to do justice to this fact, so far research has only been partially successful. The aim of this study is to supplement and improve the existing data collection strategies - survey designs for multiple actors (MA) and questionnaire modules for egocentric networks (ECN) -...
