Assessing the impact of taxes on female labor supply using a finite mixture approach

This paper expands the standard analysis of female labor supply to permit preference heterogeneity by using a finite mixture model. Using the extended model, we obtain theory consistent results whereas a traditional model produces a negative substitution effect. We use our model to illustrate the labor supply effects of a tax reform, corresponding to 1983–1992 changes in the Swedish income-tax schedule. The results shows an expected reduction in tax revenues of about 17%. Finally, we use Monte Carlo simulations and show that our proposed mixture model is robust towards different misspecifications. First version received: March 1998/final version accepted: October 1999     

Teaching the Concept of Demand: Another Approach

Using a market with which the students themselves are familiar, the author describes a lecture exercise that helps explicate the concepts of demand, elasticity, and price setting.     

Transdisciplinarity in Corporate Sustainability: Mapping the Field

Sustainability challenges are complex. So are the challenges that business firms encounter in their corresponding quest for corporate sustainability. Given this complexity, there is a need for new approaches to corporate sustainability management research. We discuss transdisciplinarity as such a novel approach in three steps. After showing that specialization is the primary conventional response to increasing complexity, we first briefly compare how inter‐, multi‐ and transdisciplinarity reintegrate decentralized, specialized knowledge. The second step describes how the emerging sustainability science has recently advanced the transdisciplinary methodology. Based on the two dimensions of interdisciplinarity and academia–practice collaboration, we third generate a framework for mapping existing research approaches in terms of their transdisciplinary qualities. We use this framework to identify room for novel methodologies in sustainability management research. Copyright © 2013 John Wiley & Sons, Ltd and ERP Environment.     

The EU public procurement regime— Does it work?

Has the Single Market for public procurement had the expected effects after six years in progress? The following article attempts to answer this question by first presenting alternative theoretical approaches to analysing the EU liberalisation of the public procurement market and then confronting these with the result of an empirical analysis.     

Trade Liberalization and the Degree of Competition in International Duopoly

This paper analyzes how a reduction in trade costs influences the possibility for firms to engage in international cartels, and hence how trade liberalization affects the degree of competition. We consider a particular intra‐industry trade model amended to allow for firms producing differentiated products. Our main finding is that trade liberalization may have an anti‐competitive effect. We find that there is no unique relation between a reduction in trade costs and the degree of competition. When products are differentiated, a lowering of trade costs is pro‐competitive if trade costs are initially high, but anti‐competitive if trade costs initially are low. Hence, trade policy is not necessarily a substitute for competition policy.     

Purchasing Power Parity and the Taylor Rule

It is well known that there is a large degree of uncertainty around Rogoff's consensus half‐life of the real exchange rate. To obtain a more efficient estimator, we develop a system method that combines the Taylor rule and a standard exchange rate model to estimate half‐lives. Further, we propose a median unbiased estimator for the system method based on the generalized method of moments with non‐parametric grid bootstrap confidence intervals. Applying the method to real exchange rates of 18 developed countries against the US dollar, we find that most half‐life estimates from the single equation method fall in the range of 3–5 years, with wide confidence intervals that extend to positive infinity. In contrast, the system method yields median‐unbiased estimates that are typically shorter than 1 year, with much sharper 95% confidence intervals. Our Monte Carlo simulation results are consistent with an interpretation of these results that the true half‐lives are short but long half‐life estimates from single‐equation methods are caused by the high degree of uncertainty of these methods. Copyright © 2014 John Wiley & Sons, Ltd.     

Pricing growth-rate risk

We characterize the compensation demanded by investors in equilibrium for incremental exposure to growth-rate risk. Given an underlying Markov diffusion that governs the state variables in the economy, the economic model implies a stochastic discount factor process S. We also consider a reference growth process G that may represent the growth in the payoff of a single asset or of the macroeconomy. Both S and G are modeled conveniently as multiplicative functionals of a multidimensional Brownian motion. We consider the pricing implications of parametrized family of growth processes G ^ε , with G ⁰=G, as ε is made small. This parametrization defines a direction of growth-rate risk exposure that is priced using the stochastic discount factor S. By changing the investment horizon, we trace a term structure of risk prices that shows how the valuation of risky cash flows depends on the investment horizon. Using methods of Hansen and Scheinkman (Econometrica 77:177–234, 2009), we characterize the limiting behavior of the risk prices as the investment horizon is made arbitrarily long.     

Expected Proficiencies for Undergraduate Economics Majors

The case for adopting a proficiencies approach to instruction and learning in the economics major is reiterated. This approach focuses on what graduating majors should be able to do with the knowledge and skills they acquire in the major, that is, their ability to demonstrate their learning in practical ways. The author's list of five proficiencies, advanced in the mid-1980s, is reviewed and revised; one additional proficiency is added and several others are refined. The author discusses the emphasis given to these proficiencies with top economics undergraduates at two major research universities, the author's experience with incorporating these proficiencies into his instruction, and the challenge of assessing the ability of economics majors to demonstrate these proficiencies.     

Competence resource specialization, causal ambiguity, and the creation and decay of competitiveness: the role of marketing strategy in new product performance and shareholder value

Marketing strategists should create, maintain, and arrest the decay of causally ambiguous resource competences that lead to competitiveness and thus performance. However, competence causal ambiguity, which helps create competitiveness, is also implicated in competitiveness decay. In this study we test a model of specialization-competitiveness-performance using primary and secondary data from 169 public respondents/firms, to examine the effects of negative internal barriers to replication and adaptation. These barriers develop due to resource lock-in arising from the same specialization processes that lead to the positive barriers to imitation that deter competitors. Results suggest that commitment to learning can mitigate resource lock-in problems with internal competence causal ambiguity, competence causal ambiguity among competitors appears more essential to competitiveness in more competitive markets, competitiveness positively relates to both shareholder value and new product performance, and an increased differential focus on marketing versus operations in the organization strengthens the positive bridge between organizational competitiveness and shareholder return.