A POSITIVE THEORY OF DISCRETIONARY POLICY, THE COST OF DEMOCRATIC GOVERNMENT AND THE BENEFITS OF A CONSTITUTION

We offer an explanation of government's preference for discretionary policy action. The main elements are asymmetric information and the ability and desire of governments to maximize reelection prospects. Discretionary policy imposes a social cost. We show that the cost is eliminated if all voters have the same information as the government. An optimal, state contingent policy rule that precommits government through a constitution eliminates the cost by removing government's opportunities to exploit its informational advantage. Rules of this kind, and constitutional restrictions, are difficult to enforce in the presence of uncertainty and different information available to government and the public.     

Sexual risk-taking in the slums of Nairobi,Kenya, 1993-98

Relatively less attention has been paid to reproductive health problems facing deprived urban residents than to those facing rural residents in sub-Saharan Africa. This is probably because the majority of Africans live in rural areas, where they are presumed to have poorer medical, educational, and other social services. Yet, the unprecedented rate of urbanization and the accompanying disproportionate growth in the proportion of poor city residents pose new challenges for health care in the region. This study examines differences in sexual behaviour between slum residents and non-slum residents in Nairobi city. The results show that slum residents start sexual intercourse at earlier ages, have more sexual partners, and are less likely than other city residents to know of or adopt preventive measures against contracting HIV/AIDS. The findings highlight the need to treat slum residents as a subpopulation uniquely vulnerable to reproductive health problems, and to expend more resources in slum settings.     

DEMAND FULFILLMENT RATES IN AN ASSEMBLETO- ORDER SYSTEM WITH MULTIPLE PRODUCTS AND DEPENDENT DEMANDS

This paper presents a model for evaluating product fulfillment rates in an assemble-to-order system with a two-level bill-of-material structure (products and components). Inventories are kept at the component level and are used to support service levels to product demands; each component is managed under a periodically reviewed, decentralized order-up-to policy. Product demands are correlated in a given period but are independent across periods. We develop the demand fulfillment rate for each product when demands are filled based on a first-come-first-served discipline with limited priorities for different products within a period. We show that the fulfillment rate can be expressed as a multivariate normal probability when the product demands follow a multivariate normal distribution. We then use a numerical example to discuss computational issues and bounds associated with the evaluation of the demand fulfillment rates. Finally, we consider a model for minimizing the total inventory investment subject to given product demand fulfillment rates.     

Binge Gambling: A Neglected Concept

It is argued that there exists a relatively neglected distinct sub-group of pathological gamblers, described in the clinical literature, who display intermittent episodes of uncontrolled gambling superimposed on a background of prolonged intervening periods of abstinence. This sub-group is characterised by intense bouts of impaired control over gambling that meet core diagnostic features for pathological gambling during such defined episodes. However, they are unlikely to display significant symptoms of pathological gambling if screened during intervening periods of abstinence and report no persistent or progressive urges or preoccupation with gambling between episodes. This article discusses the concept of binge gambling with reference to illustrative case studies and by comparison to two other recognised binge behaviours, binge drinking and binge eating.     

GENERAL WAGE ESCALATOR CLAUSES AND THE INFLATION UNEMPLOYMENT TRADE OFF

The purpose of this paper is to determine empirically the effect of general wage escalation, which is practiced in Israel, on the inflation unemployment trade off. Wage escalation is introduced by including a cost of living allowance variable in the wage equation which turns out to be very significant. It makes the long run Phillips Trade off relation much more inflationary, but does not obliterate it. A comparison with a wage price block for the U.S. suggests that the long run trade off is more inflationary in Israel and that wage indexation is one of the reasons for this bias.     

Social Representations,Alternative Representations and Semantic Barriers

Social representations research has tended to focus upon the representations that groups have in relation to some object. The present article elaborates the concept of social representations by pointing to the existence of “alternative representations” as sub‐components within social representations. Alternative representations are the ideas and images the group has about how other groups represent the given object. Alternative representations are thus representations of other people's representations. The present article uses data from Moscovici's (1976/2008 ) analysis of the diffusion of psychoanalysis to examine how people engage with alternative representations. It is demonstrated that there can be more or less dialogical relations with alternative representations. The analysis concludes by considering seven “semiotic barriers” which work to neutralise the dialogical potential of alternative representations, thus on the one hand enabling groups to talk about the views of others, while, on the other hand, remaining unchallenged by those views.