Comparative statics in a simple class of strategic market games

This paper investigates the effects of entry in two-sided markets where buyers and sellers act strategically. Applying new tools from supermodular optimization/games, sufficient conditions for different comparative statics results are obtained. While normality of one good is sufficient for the equilibrium price to be increasing in the number of buyers, normality of both goods is required for equilibrium bids and sellers' equilibrium utilities to be increasing in the number of buyers. When the economy is replicated, normality of both goods and gross substitutes guarantee that the equilibrium of the strategic market game converges monotonically (in quantities) to the competitive equilibrium. Simple counter-examples are provided to settle other potential conjectures of interest.     

The effect of pension accounting on corporate pension asset allocation

We examine the impact of new pension disclosures and subsequent full pension recognition under FRS 17 and IAS 19 in the United Kingdom and SFAS 158 in the United States on pension asset allocation. These standards require recognition of net pension surplus/deficit on the balance sheet and actuarial gains/losses in other comprehensive income. Therefore, these standards introduce volatility into comprehensive income and balance sheets. We identify a disclosure period during which UK companies disclosed all the required data under FRS 17 in the notes without recognition. We also identify a full recognition period starting 1 year before until 1 year after the adoption of FRS 17/IAS 19 (UK) and SFAS 158 (US). We predict and find that UK companies, on average, shifted pension assets from equity to debt securities during both the disclosure and the full recognition periods. We also find that while before the adoption of SFAS 158 US companies maintained a stable allocation to equities and bonds, these companies, on average, shifted funds from equities to bonds around the adoption of SFAS 158. Cross-sectional analysis shows that the shift away from equities is related to changes in funding levels, shorter investment horizons, increased financial leverage, and the expected impact of the new standards on shareholders’ equity.     

Algorithmic Mechanism Design

We consider algorithmic problems in a distributed setting where the participants cannot be assumed to follow the algorithm but rather their own self-interest. As such participants, termed agents, are capable of manipulating the algorithm, the algorithm designer should ensure in advance that the agents' interests are best served by behaving correctly. Following notions from the field of mechanism design, we suggest a framework for studying such algorithms. Our main technical contribution concerns the study of a representative task scheduling problem for which the standard mechanism design tools do not suffice. Journal of Economic Literature Classification Numbers: C60, C72, D61, D70, D80.     

Auditor Independence and the Cost of Capital Before and After Sarbanes–Oxley: The Case of Newly Issued Public Debt

An important aim of the Sarbanes–Oxley Act (SOX) was to reduce the cost of capital by enhancing auditor independence. However, prior literature has argued that SOX has been ineffective in meeting this objective. We contribute to this debate by first providing evidence suggesting that auditor independence has increased following SOX. Though we posit an inverse relationship between auditor independence and cost of capital, it is an open question whether this relationship has become stronger or weaker following SOX. An examination of this relationship reveals that auditor independence is more strongly related to bond rating and bond yield premium in the post-SOX period relative to the period before SOX. This evidence suggests greater price sensitivity of corporate debt to the level of auditor independence following SOX. We also show that controlling for the effect of auditor independence and other factors, cost of debt decreased following SOX.     

What is the Best Distribution for Pollution Abatement Efforts? Information for Optimizing the WFD Programs of Measures

The Water Framework Directive (WFD) has mobilized economic theory in order to encourage E.U. Member States to reach desirable environmental water pollution levels by conciliating economic and ecological interests. For this purpose, a stringent standard (“good status”) has been set. Nevertheless, it will be possible to relax this standard if it appears that total abatement costs required for reaching this “good status” exceed expected environmental benefits. This ambitious policy updates the issue of the abatement costs and environmental benefits assessment. Concerning the costs, a full discrimination of the abatement effort minimizes the total cost when the impact of polluters changes spatially, while a uniform effort can reach a pollution target in flexible ways. In this case, the increase of the degree of discrimination of the abatement effort is required only if it generates significant positive economies. Our theoretical and empirical results have shown that the discrimination advantage becomes insignificant for either very demanding or very little demanding ecological standards and varies according to the polluters’ profile. In the case of “intermediate” standards, efficiency gains become negligible with a restricted number of effort “levels”.     

Symmetry-breaking in two-player games via strategic substitutes and diagonal nonconcavity: A synthesis

This paper is an attempt to develop a unified approach to symmetry-breaking in strategic models arising in industrial organization by constructing two general classes of two-player symmetric games that always possess only asymmetric pure-strategy Nash equilibria. These classes of games are characterized in some abstract sense by two general properties: payoff nonconcavities and some form of strategic substitutability. Our framework relies on easily verified assumptions on the primitives of the game, and relies on the theory of supermodular games. The underlying natural assumptions are satisfied in a number of two-stage models with an investment decision preceding product market competition. To illustrate the generality and wide scope for application of our approach, we present some existing models dealing with R&D, capacity expansion and information provision, which motivated this study.     

The position of agriculture in kibbutz economy—an attempt at quantitative projection

The Israeli Kibbutz Movement adopted the ideology of the “Return to Nature” and aspired to especially develop agricultural labour. But in the past decade there has been a process of “internal migration” of workers from agriculture to industrial occupations, which was compared to the “Industrial Revolution”. The ratio of agricultural workdays to other productive branches workdays decline from 62% in 1967 to 46.5% in 1974. Kibbutz' management has many reasons to evaluate its future direction, (investment in land, in education, etc.). We shall try to describe the expected developments, using the Markov chain. We shall also try to analyse the yearly interchanges and transfer from agriculture to industry and vice versa. We shall attempt to show that the process of decreasing agricultural manpower has almost ceased, and it will become stable on a fixed level of about 43%.     

Does the quality of institutions enhance savings? The case of Sub-Saharan Africa

Over the last three decades, there has been increasing disparity in savings across regions and income groupings globally. In this paper, we investigate whether the quality of institutions explains the saving disparities in Sub-Saharan Africa (SSA). Utilizing comprehensive panel data and spanning the period 1980–2015, we estimate a savings model using the two-step instrumental variable generalized method of moment (2SIV-GMM) estimator. Our results show that the impact of institutions on savings behaviour differs across regions and income groupings, and in SSA, in aggregate. We find that the level and growth of per capita income and terms of trade enhance savings whereas government consumption expenditure, financial sector development and the elderly dependency rate are savings impeding. The findings are robust to alternative model specification and highlight the importance of institutions in influencing savings behaviour in SSA.