Do the world’s largest cities follow Zipf’s and Gibrat’s laws?

We examine whether the size distribution and the growth process of the world’s largest cities follow Zipf’s law and Gibrat’s law. The parametric results of the size distribution analysis reject Zipf’s law for all sample sizes and also show the Zipf exponent systematically declines as the sample size increases. The growth process analysis confirms Gibrat’s law and yields a local Zipf exponent of one for cities with a normalized population less than 0.53%, which includes about 95% of the total observations. The deviations from Zipf’s law occur at the extreme upper tail and are likely a result of restricted mobility of population across countries. However, given that Gibrat’s law holds, we can expect the size distribution to converge to Zipf’s law with a decline in the barriers to immigration.     

Do Merger Laws Deter Cross‐Border Mergers and Acquisitions?

Cross‐border merger and acquisition (M&A) flows have surged since the early 1990s. In the meanwhile, more and more countries have passed merger laws that regulate M&A. We propose a gravity model to examine the influence of merger law on cross‐border M&As. Based on a data set on cross‐border deals from 1985 to 2015, we find that merger regulation has a deterrence effect on cross‐border M&As. We show the robustness of our results in a number of tests, including using different measurements of cross‐border M&A activity and merger law. We also document a heterogeneous effect on member countries of the Organization for Economic Co‐operation and Development.     

Intellectual property rights and R&D subsidies: are they complementary policies?

IPR protection and R&D subsidy are simultaneously implemented in many economies. Are they complementary policies for improving the welfare of consumers? We address this question in a dynamic general equilibrium model with innovation-driven growth. Under concave utility, the answer is yes for two cases: (1) the economy does not begin from steady state and the elasticity of intertemporal substitution (EIS) is relatively large; (2) the economy begins from steady state with either a sufficiently small initial consumption and a relatively large EIS or a sufficiently big initial consumption and a relatively small EIS. Under linear utility, the answer is yes if the discounted lifetime utility is finite in equilibrium, no matter the economy begins from the steady state or not. As empirical evidence finds cross-country heterogeneity in EIS, they are not complementary for all economies. We also identify reasonable cases whereby they are substitute policies, so we show when it is not welfare-enhancing to simultaneously implement both policies.     

R&;D spillovers and firms’ performance in Italy

Using a translog production function we estimate the impact of R&D spillovers on the output performance of Italian manufacturing firms over the period 1998-2003. Technological flows are measured through an asymmetric similarity index that takes also into account the geographical proximity of firms. Results show that R&D spillovers positively affect firms production and that geography matters in determining the role of the external technology. Moreover, we find that the effect of R&D spillovers is high in the Centre-South of Italy and that the stock of R&D spillovers is Morishima complement to the stock of R&D own-capital. The authors thank Giovanni Anania, Olof Ejermo, Vincenzo Scoppa, Alessandro Sterlacchini and Marco Vivarelli for useful comments on an earlier draft. We are also grateful to the participants at the Workshop on “Spatial Econometrics and Statistics” in Rome (University “Guido Carli, May 2006) and at the 2006 ADRES Conference, “Networks of Innovation and Spatial Analysis of Knowledge Diffusion” in St Etienne for helpful discussion and to an anonymous referee for many detailed and constructive comments on an earlier version. All remaining errors and omissions are our own. Financial support received by MIUR is gratefully acknowledged.     

Prune or cut down: salience and Sugden’s <Emphasis Type="Italic">The Economics of Rights</Emphasis>, <Emphasis Type="Italic">Co</Emphasis>-<Emphasis Type="Italic">operation and Welfare</Emphasis>

In The Economics of Rights, Co-operation and Welfare (1986), Robert Sugden follows the tradition from Thomas Schelling and David Lewis in ascribing a central role to the notion of salience within his theory of convention. However, against this, Bruno Verbeek (Instrumental rationality and moral philosophy, Kluwer, Dordrecht, 2002) has argued that an empirically adequate notion of salience may not be incorporated into a generic account of convention without circularity obtains. This paper examines Verbeek’s argument against a background of experimental as well as theoretical work on coordination problems. It finds that the argument fails to consider at least two candidate theories of salience that may be incorporated into the theory of convention without circularity: cognitive hierarchy theory that iterates Sugden’s notion of psychological salience and Schelling salience. Thus, in the end Verbeek’s criticism of the role ascribed to salience in theories of convention may be dismissed, though its discussion draws a fruitful perspective.     

Public and Private Investments in Greece: Complementary or Substitute ‘Goods’?

This paper investigates whether government investment spending exerts a positive or a negative effect on private investments. Time-series data for Greece as well as the methodology of cointegration suggest that, over the period 1948-80, public investment spending exerted a positive effect on private investments, while over the period 1981-96, the relationship turned out to be negative. Empirical results indicate that the large increase of the public share in the total investment process tended to crowd out private investments and to jeopardize the growth process of the economy.     

Conventional and Islamic Banks’ Performance in the Gulf Cooperation Council Countries; Efficiency and Determinants

This paper investigates the cost efficiency levels of the banking sectors of the Gulf Cooperation Council (GCC) countries for the period from 2001 to 2015 and provides a comparison of conventional and Islamic banks. We obtain measures of efficiency using a stochastic frontier model and the meta-frontier approach. The evidence demonstrates that Islamic banks are less efficient and have a weaker level of production technology than conventional banks. The cost efficiency of banks varies significantly across the six Gulf countries and over time. We adopt the results drawn from the meta-frontier model that allow to take into account the differences between the studied countries, and empirically examine the bank-specific, financial, macroeconomic, and political determinants of banking efficiency. The results provide evidence of the differential effects of the selected variables on the efficiency of conventional and Islamic banks. These variables affect the performance of the two types of banks in different ways and with different magnitudes.

     

Do German Welfare‐to‐Work Programmes Reduce Welfare Dependency and Increase Employment?

Abstract. During the last decade, many Western economies reformed their welfare systems with the aim of activating welfare recipients by increasing welfare‐to‐work programmes (WTWP) and job‐search enforcement. We evaluate the short‐term effects of three important German WTWP implemented after a major reform in January 2005 (‘Hartz IV’), namely short training, further training with a planned duration of up to three months and public workfare programmes (‘One‐Euro‐Jobs’). Our analysis is based on a combination of a large‐scale survey and administrative data that is rich with respect to individual, household, agency level and regional information. We use this richness of the data to base the econometric evaluation on a selection‐on‐observables approach. We find that short‐term training programmes, on average, increase their participants' employment perspectives. There is also considerable effect heterogeneity across different subgroups of participants that could be exploited to improve the allocation of welfare recipients to the specific programmes and thus increase overall programme effectiveness.     

The Netherlands’ NAMEA; presentation,usage and future extensions

The national accounting matrix including environmental accounts (NAMEA) contains figures on environmental burdens in relation to economic developments as reflected in the national accounts. In the NAMEA, existing national accounts matrices have been extended with accounts in physical units. Since 1994, the NAMEA is a regular part of the annual Dutch national accounts. In this article, an aggregate NAMEA will be described. Next, the contribution of economic activities to economic indicators is compared with their contribution to environmental themes, both based on the information in the NAMEA. In addition, the cumulative contribution of economic activities to economic and environmental indicators are also given, thus taking into account the relations between the production activities. Finally, a number of recent applications and extensions of the NAMEA in the Netherlands are described.     

Wage differences between Austrian men and women: <Emphasis Type="Italic">semper idem?</Emphasis>

In most OECD countries, the wage gap between men and women has narrowed during the past two decades. Developments of the last 20 years, e.g., increased labour market attachment of women or the introduction of equal pay laws, may have reduced the gender wage gap. We investigate the extent, persistence, and socio-economic determinants of the gender wage gap in Austria, for the years 1983 and 1997. Using wage decomposition techniques, we find that the average gender wage gap was almost as high in 1997 as it was in 1983. Not accounting for differences, the gender wage gap dropped from 25.5 to 23.3% of men’s wages. Taking observable differences between men and women into account, we estimate that the mean gender wage gap that cannot be explained, i.e., discrimination against women, dropped from 17 to 14% of men’s wages. A decomposition of the gender wage gap over time indicates that both returns to human capital and less discrimination were responsible for the narrowing of the gender wage gap.

Who pays taxes? Liturgies and the <Emphasis Type="Italic">Antidosis</Emphasis> procedure in Ancient Athens

Ancient Athens developed a constitutional democracy. A core, time invariant political economy problem is that of providing public services when wealth is imperfectly know. I model theoretically a unique institution developed in Ancient Athens known as the Antidosis. It allowed a citizen on the list of tax-payers to challenge a citizen not contributing to replace him and make the public goods contribution. The challenged citizen, rather than allow the claim to go before a jury trial, could choose to swap wealth with the accusing tax payer. I argue this acts as a screening mechanism and improves upon the asymmetric information problem the government has in identifying who is indeed those who have the highest wealth to provide the tax revenue to finance the public services.     

R&D expenditures and firm growth – is small beautiful?

ABSTRACT

This paper examines how efficiently different groups of firms use their R&D expenditures. To this end, it investigates how the empirical relationship between firms' R&D expenditures and their sales growth varies with different values of firm size, firm age, and the number of firms in the respective industry. Using panel data for Switzerland ranging from 1995 to 2012, the paper finds that smaller, more mature firms show a more positive relation between R&D expenditures and sales growth than both relatively larger or younger firms. The paper argues that, on the one hand, these firms can benefit from various small size advantages in the R&D process, such as more motivated researchers, caused by a stronger connection to the firm's fate. On the other hand, these firms can also benefit from a well-established R&D department that allows absorbing the latest technological developments. The paper further finds that industries consisting of many small firms show a more positive relation between R&D expenditures and sales growth than industries consisting of only a few large firms. The intuition behind this result is that industries consisting of many small firms imply more independent innovative trials, which then together result in a higher probability of discovering successful innovations. In sum, the paper finds that groups consisting of a large number of small, more mature firms spend their R&D in the most efficient way.