VII. Erzeugung und Handle,Warenmärkte

Ohne Zusammenfassung     

Measuring Transparency in the Dutch Mortgage Market

Summary This paper is an empirical study of pricing in the Dutch mortgage market. For a narrowly defined set of endowment mortgages (with a fixed lending rate of 10 years), we find that the price dispersion within lenders is larger than the dispersion across lenders. Prices remain dispersed across lenders, even after controlling for characteristics of the borrower, the municipality and the government bond rate. Apparently, the mortgage market is not fully transparent, which impedes competition in the mortgage market. We also find that the price dispersion for mortgages sold by banks is smaller than that for mortgages sold by other lenders. A likely explanation is that lenders using middlemen have higher agency costs. We wish to express our gratitude to the National Mortgage Guarantee (Nationale Hypotheek Garantie) in Zoetermeer, in particular Karel Schiffer and Hans Mersmann, for providing us access to their data as well as for their hospitality. We are grateful to Wim van Assenbergh, Harry Garretsen, Ralph de Haas, Jan Lemmen, Clemens Kool, Job Swank and two anonymous referees of this journal for their comments on previous versions of this article.     

House price risk and the hedging benefits of home ownership

Using a repeat-sales methodology, this paper finds that estimates of house price risk based on aggregate house price indices substantially underestimate the true size of house price risk. This is the result of the fact that aggregate house price indices average away the idiosyncratic volatility in house prices. Additional results show that the idiosyncratic risk exceeds the hedging benefits of home ownership. These results imply that for many home owners, owning a house may well add more price risk than it hedges away. These findings are based on a detailed dataset of individual housing transactions in the Netherlands.     

A low growth path in Austria: potential causes,consequences and policy options

This paper reports on an Austrian research project that deals with the question how the Austrian society could cope with long-lasting low economic growth. Various causes of low-growth that are relevant for Austria (a deteriorating balance of trade, increasing resource prices, consumer restraint of households and less immigration) have been identified, leading to an only moderate gross domestic product growth of 0.55 % per year. The resulting impact on the economy is substantial: the labour market suffers from a shortage of labour supply (due to reduced migration) and from a reduced demand for labour (due to reduced demand in consumption, investments and exports). Subsequently, less employment decreases the development of the disposable income of private households (tax rates and social security contributions held constant). Related to this, public debt is higher due to reduced tax incomes and slightly growing public expenditures. From an ecological perspective, resource consumption increases at a slower rate, however, no absolute reduction can be reached. CO₂ emissions also slightly increase. Therefore, it cannot be assumed that low growth necessarily leads to the achievement of energy and environmental policy goals. Based on these results, a policy scenario was used to analyze whether and how policy measures are able to cope with the negative consequences of persistent low growth. The results reveal that the selected measures are suitable to reduce negative economic effects: The implementation of reduced working time and an eco-social reform of levies might improve the labour market situation. The negative effects on the national budget can be diminished by a reduction of environmentally harmful subsidies. Induced behaviour changes of private households can reduce energy and resource-intensive consumption.     

“I think I can…I think I can”: The impact of perceived selling efficacy and deal disclosure on salesperson escalation of commitment

Salespeople have considerable autonomy in the choices they make with respect to both the types and amounts of resources they deploy in pursuing potential customer accounts and specific sales opportunities. Building from a prospect theory framework and also leveraging self-justification theory, this research reports the results of three experimental studies conducted on practicing salespeople. The experiments help shed light on several factors that might influence a critical form of salesperson resource allocation decision — the allocation of the salesperson's own ‘selling time’ which is devoted to a specific sales opportunity. Study 1 establishes that an escalation of commitment effect exists when salespeople pursue a new customer opportunity, and that “competitive intensity” is a key variable that attenuates the escalation of commitment effect. Study 2 demonstrates that a salesperson's “selling efficacy” – or their confidence in their abilities and decision-making in sales – has important, but mixed, effects on the salesperson's allocation of scarce resources. Finally, study 3 broadens this research by showing that environmental factors such as the extent to which the salesperson has ‘disclosed’ their pursuit of a new sales opportunity within their own organization can also influence the escalation of commitment effect on how they allocate resources in pursuit of that business. The article's broader contribution is that it offers an overdue and preliminary glimpse into the levers which shape and influence how, when, and why salespeople apply resources in the pursuit of new customers.     

Common knowledge and quantification

Summary. The paper consists of two parts. The first one is a concise introduction to epistemic (both propositional and predicate) logic with common knowledge operator. As the full predicate logics of common knowledge are not even recursively enumerable, in the second part we introduce and investigate the monodic fragment of these logics which allows applications of the epistemic operators to formulas with at most one free variable. We provide the monodic fragments of the most important common knowledge predicate logics with finite Hilbert-style axiomatizations, prove their completeness, and single out a number of decidable subfragments. On the other hand, we show that the addition of equality to the monodic fragment makes it not recursively enumerable. Received: March 7, 2001; revised version: April 4, 2001