THE DISINCENTIVE EFFECT OF FOOD-FOR-WORK ON LABOUR SUPPLY AND AGRICULTURAL INTENSIFICATION AND DIVERSIFICATION IN ETHIOPIA

Food-for-work (FFW) as a form of food aid has been criticised for its many disincentive effects. This paper investigates alleged disincentive effects of food-for-work (FFW) on labour supply and agricultural intensification and diversification in one district of Ethiopia, using a ranking exercise and a small survey of farmer opinion. Despite the popularity of FFW as a source of income, careful project design meant that disincentives were largely avoided. In particular, the take-up of FFW was restricted, by a combination of self-targeting and community based administrative rationing; and agricultural intensification and diversification were encouraged directly through extension programmes.     

Implementing the nash extension bargaining solution for non-convex problems

Conley and Wilkie (1993) introduced an axiomatization at the Nash extension bargaining solution defined on a domain of comprehensive but not necessarily convex problems. In this paper we present a non-cooperative game which implements the Nash extension solution in subgame perfect equilibria in the limit as the discount rate applied between rounds of play vanishes.     

Rejoinder : The mixed blessing of domestic support policies

This rejoinder notes the encouraging conclusion in the article by Tim Josling and Richard Barichello (p317–27),¹ that the impact of the policies followed for wheat by the world's main exporters has tended towards stabilizing world markets over the past twelve years. However, placing this conclusion in a wider context, the author believes that assuring world food security will remain dependent on support policy decisions taken for domestic policy reasons and that developed country domestic support policies have had a mixed effect for world markets.     

Appropriate roles for statistical decision theory and hypothesis testing in model selection: An exposition

Statistical studies in the social sciences often analyze a cross section of communities that are assumed to be homogeneous for certain characteristics. However, the researcher might be interested in investigating the general behavior of all communities as well as particular differences between groups of communities that are spatially separated. This paper suggests, and empirically examines, a procedure which utilizes both statistical decision theory and hypothesis testing and enables us to determine the best model for estimating behavioral relationships for the full sample and for subgroups. The paper examines property crime occurrences in 94 New Jersey suburban communities of Philadelphia utilizing the full sample as well as subgroups within it. The purpose of grouping is to further understand the possible interjurisdictional mobility of urban criminals. The study suggests possible factors that induce urban criminals to commit crimes in the suburbs.     

Product choice with economies of scope

This paper develops a model in which two competing firms on a bounded line each sell two products. Production costs for each firm are lower the closer are its two products. It is shown that there may be anywhere from zero to three possible equilibrium configurations. Equilibrium may entail market segmentation, market interlacing or an intermediate case. The paper contributes to two bodies of literature: (i) Industrial organization. When the line is interpreted as a one-dimensional characteristic space, the model provides an appealing explanation of economies of scope in multi-product firms. (ii) Firm location theory. The model relaxes the unrealistic assumption made in spatial models that each firm has a single outlet and obtains significantly different results.     

REGULATORY INFLUENCES ON PORTFOLIO PERFORMANCE: SHORT SELLING AND REGULATION T

Several models are developed to examine the portfolio effect of short selling. Three things are demonstrated in this study. First, that for many assets, short selling is a useful strategy for reducing risk when constructing mean-variance efficient portfolios. Second, Regulation T can be used in combination with short selling to further improve expected portfolio performance. Third, the performance of the suggested models is superior to previously suggested allocation models. Ex ante and ex post tests are conducted to arrive at the above conclusions.     

Private and public sector regulation of competitively tendered contracts

This paper addresses two contractual issues using a sample of competitively tendered contracts for cleaning services. First, the paper considers the characteristics that distinguish private from public sector organisations in their methods of selection and regulation of contractors. Secondly, the paper examines the perceived effectiveness of such regulatory mechanisms in terms of compliance with contract specifications and overall assessment of quality. Econometric analysis reveals that private sector organisations differ from their public sector counterparts in the selection procedures of contractors. Moreover, significant differences emerge in the apparent efficacy of a range of regulatory instruments in assuring contractual performance.We are grateful to Jörg Finsinger and participants at the Industrial Organization Conference in Vienna (1992) for helpful comments. The usual disclaimer applies.     

‘Fog in the Channel,continent isolated’: Britain as a model for EU social and economic policy?

A discourse on British ‘exceptionalism’ is currently developing according to which the UK's apparently ‘flexible’ economy should serve as a model for the rest of the EU. This is explored through two case studies concerning the transmission of regulatory practices from the continent to Britain (working time) and vice versa (takeover regulation). We suggest that a UK model of the firm constructed around shareholder value and untrammeled managerial prerogative is unlikely to have much resonance for other European systems, in which the term ‘flexibility’ has different connotations.