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Modelling consumer behaviour in a profile design using a three equation generalised Tobit model
(1997)
We propose the application of a three equation generalised Tobit to model different aspects of consumer behaviour in a full profile study design. The model takes into account that consumer behaviour can be measured by preference scores, purchase probability and purchase volume. We aim to avoid the drawbacks of traditional conjoint analysis where the latter two aspects are disregarded. Starting from a full profile design, we develop the appropriate questionnaire layout, the econometric model, the likelihood function and tests. The model is applied in a market entry study for an innovative medicament after a reform of Germany´s public health system in 1993-1994. JEL Classification: C35,M31,L65
In the early 1990s, a consensus emerged among the leading experts in the field of small and micro business finance. It is based on three elements: The focus of projects should be on improving the entire financial sector of a given developing country; a commercial approach should be adopted, which implies covering costs and keeping costs as low as possible; and institutions should be created which are both able and willing to provide good financial services to the target group on a lasting basis. The starting point for this paper, which wholeheartedly endorses these three elements, is the proposition that putting these general principles into practice is much more difficult than some of their proponents seem to believe - and also more difficult than some of them have led donors to believe. The paper discusses the central issues of small and micro business financing in three areas: credit in general and the cost-effectiveness of lending methodologies in particular (Section II); savings in general and the role of deposit-taking in the growth of a target group-oriented financial institution in particular (Section III); and the process of creating viable target group-oriented financial institutions in developing countries (Section IV). We argue that donor institutions must be willing, and prepared, to play a role here which differs in important respects from their conventional role if they really wish to support sustainable financial sector development.
Paper Presented at the Conference on Workable Corporate Governance: Cross-Border Perspectives held in Paris, March 17-19, 1997 To appear in: A. Pezard/J.-M. Thiveaud: Workable Corporate Governance: Cross-Border Perspectives, Montchrestien, Paris 1997. The paper discusses the role of various constituencies in the corporate governance of a corporation from the perspective of incomplete contracts. A strict shareholder value orientation in the sense of a rule that at any time firm decisions should be made strictly in the interest of the present shareholders would make it difficult for the firm to establish long-term relationships as the potential partners would have to fear that, at a later stage of the co-operation, the shareholders or a management acting only on their behalf could exploit them because of the inevitable incompleteness of long-term contracts. One way of mitigating these problems is to put in place a corporate governance system which gives some active role to the other stakeholders or constituencies, or which makes their interests a well-defined element of the objective function of the firm. A commitment not to follow a policy of strict shareholder value maximization ex post can be efficient ex ante. Such a system would clearly differ from what is advocated by proponents of a "stakeholder approach", as it would limit the rights of the other constituencies to those which would have been agreed upon in a constitutional contract concluded between them and the founder of the firm at the time when long-term contracts are first established.
During the last years issues of strategic management accounting have received widespread attention in the accounting literature. Yet the conceptual foundation of most proposals is not clear. This paper presents a theoretical analysis of one of the most prominent approaches of strategic management accounting, i.e., Target Costing. First, the relationship between Target Costing and Life-Cycle-Costing is shown. Secondly, a model based on a mechanism-design-approach is used to answer the question of whether the „Market-into-Company“-method of Target Costing can somehow be endogenized. The model captures problems of asymmetric information, price policy and cost structures (i.e. learning effects etc.). The analysis shows that the more „strategic“ is the firm´s cost function, the less valid is „strategic“ management accounting in terms of the usual way Target Costing is employed.
Insider trading and portfolio structure in experimental asset markets with a long lived asset
(1997)
We report results of a series of nine market experiments with asymmetric information and a fundamental value process that is more "realistic" than those in previous experiments. Both a call market institution and a continuous double auction mechanism are employed. We find considerable pricing inefficiencies that are only partially exploited by insiders. The magnitude of insider gains is analyzed separately for each experiment. We find support for the hypothesis that the continuous double auction leads to more efficient outcomes. Finally, we present evidence of an endowment effect: the initial portfolio structure influences the final asset holdings of experimental subjects.
In this study we are concerned with the impact of vocational training on the individual’s unemployment duration in West Germany. The data basis used is the German Socio-Economic Panel (GSOEP) for the period from 1984 to 1994. To resolve the intriguing sample selection problem, i.e. to find an adequate control group for the group of trainees, we employ matching methods which were developed in the statistical literature. These matching methods uses as the main matching variable the individual propensity score to participate in training, which is obtained by estimating a random effects probit model. On the basis of the matched sample a discrete time hazard rate model is utilized to assess the impact of vocational training on unemployment duration. Our results indicate, that training significantly raises the transition rate of unemployed into employment in the short but not in the long run. JEL classification: C40, J20, J64
We estimate a semiparametric single-risk discrete-time duration model to assess the effect of vocational training on the duration of unemployment spells. The data basis used in this study is the German Socio-Economic-Panel (GSOEP) for West Germany for the period from 1986 to 1994. To take into account a possible selection bias actual participation in vocational training is instrumented using estimates of a randomeffects probit model for the participation in qualification measures. Our main results show that training does have a significant short term effect of reducing unemployment duration but that this effect does not persist in the long run. JEL classifications: C41, J20, J64