Valorisation of a local asset: The case of olive oil on Lesvos Island,Greece

Agri-food products are more and more considered and treated as valuable local assets. The valorisation of such local assets is an issue of great importance, especially in disadvantaged areas. In this paper, the case of the olive oil of Lesvos Island in Greece is presented. We seek to analyse the supply chain and examine the benefits that are distributed to its various actors by comparing three different olive oil products: PGI, organic and conventional olive oil with the use of two dimensions: size of production and success of the producers. The data come from quantitative and qualitative research to different actors across the supply chain and from published and unpublished local and national sources. The findings indicate that olive farmers are “cut-off” from the benefits of the products to a great extent. Small bottlers are the ones that receive the most benefits, as they can ignore big retailers. Overall, the absence of consensus and common management between the different actors, along with a complex and very competitive international market create uneven impacts.     

WHAT'S TO KNOW ABOUT THE CREDIBILITY OF EMPIRICAL ECONOMICS?

The scientific credibility of economics is itself a scientific question that can be addressed with both theoretical speculations and empirical data. In this review, we examine the major parameters that are expected to affect the credibility of empirical economics: sample size, magnitude of pursued effects, number and pre‐selection of tested relationships, flexibility and lack of standardization in designs, definitions, outcomes and analyses, financial and other interests and prejudices, and the multiplicity and fragmentation of efforts. We summarize and discuss the empirical evidence on the lack of a robust reproducibility culture in economics and business research, the prevalence of potential publication and other selective reporting biases, and other failures and biases in the market of scientific information. Overall, the credibility of the economics literature is likely to be modest or even low.     

Input usage,output mix and industry deregulation: an analysis of the Australian dairy manufacturing industry*

In this paper we estimate a Translog output distance function for a balanced panel of state level data for the Australian dairy processing sector. We estimate a fixed effects specification employing Bayesian methods, with and without the imposition of monotonicity and curvature restrictions. Our results indicate that Tasmania and Victoria are the most technically efficient states with New South Wales being the least efficient. The imposition of theoretical restrictions marginally affects the results especially with respect to estimates of technical change and industry deregulation. Importantly, our bias estimates show changes in both input use and output mix that result from deregulation. Specifically, we find that deregulation has positively biased the production of butter, cheese and powders.     

A Data Envelopment Analysis of the Efficiency of Victorian TAFE Institutes

In recent years the provision of vocational education and training has been recognised as having a vital role to play in improving Australia's economic performance and in alleviating the hardship of the long term unemployed. The importance of education and training gives rise to the issue of operating educational institutions with a high level of efficiency. In this article, Data Envelopment Analysis is used to derive estimates of the technical and scale efficiency of Victorian Technical and Further Education Institutes in 1995. The results reveal substantial dispersion in technical and scale efficiencies. Regression analysis is used to identify variables which are associated with technical inefficiency.     

META‐ANALYSIS OF ECONOMICS RESEARCH REPORTING GUIDELINES

Meta‐regression analysis (MRA) can provide objective and comprehensive summaries of economics research. Their use has grown rapidly over the last few decades. To improve transparency and to raise the quality of MRA, the meta‐analysis of economics research‐network (MAER‐Net) has created the below reporting guidelines. Future meta‐analyses in economics will be expected to follow these guidelines or give valid reasons why a meta‐analysis must deviate from them.     

DOES ICT GENERATE ECONOMIC GROWTH? A META‐REGRESSION ANALYSIS

Despite phenomenal technological progress and exponential growth in computing power, economic growth remains comparative sluggish. In this paper, we investigate two core issues: (1) is there really no connection between ICT and national economic growth? and (2) what factors moderate the ICT–growth relationship? We apply meta‐regression analysis to 466 estimates drawn from 59 econometric studies that explore the Solow or Productivity Paradox that there is little impact of ICT on economic growth and productivity. We explore the differential impact of ICT on developed and developing countries and the differential impact of different types of ICT: landlines, cell phones, computer technology and Internet access. After accommodating potential econometric misspecification bias and publication selection bias, we detect evidence that ICT has indeed contributed positively to economic growth, at least on average. Both developed and developing countries benefit from landline and cell technologies, with cell technologies’ growth effect approximately twice as strong as landlines. However, developed countries gain significantly more from computing than do developing countries. In contrast, we find little evidence that the Internet has had a positive impact on growth.     

Is Profit Sharing Productive? A Meta-Regression Analysis

In this article, we re-examine the relationship between group-based profit sharing and productivity. Our meta-regression analysis of 355 estimates from 56 studies controls for publication selection and misspecification biases and investigates the impact of firm-level unionisation. Profit sharing is positively related to productivity on average, with a stronger relationship where there is higher unionisation. The positive effect of profit sharing on productivity is larger in cooperative firms and in transition economies. Separate meta-analysis of interactions suggests that profit sharing works better in combination with capital investment and employee participation in decisions.     

THE AID EFFECTIVENESS LITERATURE: THE SAD RESULTS OF 40 YEARS OF RESEARCH

Abstract.  The aid effectiveness literature (AEL) consists of empirical macroeconomic estimates of the effects of development aid. By the end of 2004, it comprised 97 econometric studies of three families of related effects. Each family has been analyzed in a separate meta-analysis. The AEL is an ideal subject for meta-analysis as it uses only a few formally similar models to estimate the same underlying effects. It is also an area with strong beliefs, often generated by altruism. When this whole literature is examined, a clear pattern emerges. After 40 years of development aid, the preponderance of the evidence indicates that aid has not been effective. We show that the distribution of results is significantly asymmetric reflecting the reluctance of the research community to publish negative results. The Dutch disease effect on exchange rates provides a plausible explanation for the observed aid ineffectiveness.     

Does the UK Minimum Wage Reduce Employment? A Meta‐Regression Analysis

The employment effect from raising the minimum wage has long been studied but remains in dispute. Our meta‐analysis of 236 estimated minimum wage elasticities and 710 partial correlation coefficients from 16 UK studies finds no overall practically significant adverse employment effect. Unlike US studies, there seems to be little, if any, overall reporting bias. Multivariate meta‐regression analysis identifies several research dimensions that are associated with differential employment effects. In particular, the residential home care industry may exhibit a genuinely adverse employment effect.