LABOUR ON THE FAMILY FARM: A THEORY AND SOME POLICY IMPLICATIONS

This paper seeks to examine the labour-input decisions on family farms at a theoretical level and to demonstrate some policy implications of this theory. Where the family has the opportunity to work on the land, utility maximisation, rather than profit maximisation, would seem to be a more appropriate criterion for decision-making. Accordingly, the decision-making process is analysed under this alternative assumption. We then consider some of the policy implications of this model. In particular, we consider the effects of policies on the labour-inputs since the optimal allocation of labour is at the heart of most agricultural policies.     

An Economic View of the Debate on Farm Size in Saskatchewan: A Comment

In a recent paper in this Journal, Jensen (1984) continues the debate on farm size in Saskatchewan. In particular, he considers the relationship between farm size and efficiency "… to determine if it is necessary to have fewer and larger farms in order to gain cost efficiency …" Attention is focused on the notion of returns to size and the vehicle for analysis is estimates of long-run average cost (LAC) curves. Individual farm data are used for different farm types in the two years, 1977 and 1980. Equations are fitted to each farm type in each year. Hence, each estimated equation is based on cross-section data. The conclusion drawn from this analysis is that, "… at the frontier, constant returns to size are the norm in Saskatchewan agriculture" (p. 199). Moreover, "Governments could consider removing policies which favor large units …" (p. 198).     

倾销与比较优势

简单贸易模型的一个重要假设是市场完全竞争，并且贸易是源于比较优势。然而，现实中很少存在完全竞争的市场，不完全竞争市场使传统的贸易模型呈现出有趣的结果。这引起关注的一方面是不完全竞争企业在不同市场上给出不同的价格，即通常所说的“价格歧视”。在国际贸易中，最基本的价格歧视方式是“倾销”，即对于同一商品，出口商在国际市场上价格低于国内市场上的价格。如果国内企业是完全竞争的，并且在国内市场上以边际成本价格卖出，倾销就是指在国外市场上已低于边际成本价格出售。在多数的贸易模型中，商品按进口品和出口品分组，货币被认为是交换的中性媒介。对基于比较优势进行贸易的倾销的指控，主要是由于运用了与贸易不联系的汇率。我们认为，根据汇率来衡量基于比较优势的贸易获利在逻辑上是错误的，因为这种衡量往往导致明显的倾销，如果汇率市场是均衡的话。恰当的衡量方法是以贸易为基础的影子汇率。进一步来说，贸易障碍使得外汇交换和贸易不完全替代，使得汇率按接受到的价格相互高估。我们认为，只有在出口与基于比较优势的利润最大化不一致时，才能说明是倾销。     

Risk and a changing environment for Antarctic tourism

This research note explores the issues of perceptions of risk and a changing environment for Antarctic tourism. A pilot study was undertaken aboard an Antarctic cruise ship in February 2008 with the purpose of examining the views of passengers about risk and environmental change in light of the recent sinking of the Explorer and the growing awareness of climate change effects in polar regions.     

Integrated analysis of content and construct validity of psychometric instruments

Establishing adequacy of psychometric properties of an instrument involves acquisition and evaluation of evidence based on item content and internal structure. Content validity evidence consists of subject matter experts providing quantitative ratings of the extent to which items are a representative sample of targeted domain. Evidence of internal structure includes factor analytic studies and examination of item interrelationships based on item responses from participants. Although subject matter expert ratings and participant response data are traditionally analyzed separately, each serves to inform the other in important ways. We propose integrating subject matter experts’ and participants’ data seamlessly to establish a unified model of validity evidence. The approach is applied to an instrument designed to measure nursing home culture change (i.e., resident-centered care). The proposed method has been demonstrated to be useful with a posterior distribution resulting in stable estimates of psychometric parameters superior to traditional analytic approaches. To illustrate the efficacy of the methodology, we present a simulation study and discuss its place in psychometric methods.     

HRM as a predictor of innovation

There is growing evidence available to suggest that HR practice is an important predictor of organisational performance. In this article, we argue that HR practices also have the potential to promote organisational innovation. We describe a longitudinal study of 22 UK manufacturing companies and examine the relationship between such practices and product and technological innovation. Results reveal that training, induction, team working, appraisal and exploratory learning focus are all predictors of innovation. Contingent reward, applied in conjunction with an exploratory learning focus, is positively associated with innovation in technical systems. Furthermore, training, appraisal and induction, combined with exploratory learning focus, explain variation between companies in product and technological innovation above and beyond the main effects observed.     

Managerial efficiency and human capital: an application to English association football

The problem of hidden action in organizations makes direct measurement of managerial performance problematic. But in English association football hidden action is unlikely to be as serious a problem because the owner observes the manager's performance each time the team plays. In this situation production frontier analysis may be used to measure managerial performance and analyze the variation in performance across managers in terms of manager human capital. Having some kind of prior affiliation with the club and achieving international recognition as a player are especially important. Overall, initial experience matters more than specific and general managerial experience. Copyright © 2002 John Wiley & Sons, Ltd.     

Structural Breaks and the Relationship between Barley and Wheat Futures Prices on the London International Financial Futures Exchange

Co-movement between futures prices can arise when commodities are substitutes. Counterintuitively, Dawson and White fail to find a significant long-run link between feed barley and wheat prices on the London International Financial Futures Exchange. This relationship is re-examined using  Johansen, Mosconi, and Nielsen's co-integration procedure that permits structural breaks. Results show evidence of co-integration and hence price discovery. There is a significant break in October 2000 following Common Agricultural Policy intervention price reductions, the barley–wheat futures market is perfectly integrated, and the barley price Granger-causes the wheat price. Modeling structural breaks in price relationships appears important.     

HOW MUCH DO VOTERS KNOW? AN ANALYSIS OF MOTIVATION AND POLITICAL AWARENESS

Downs argued that instrumental individuals have no incentive to incur costs to turn out to vote. High turnout rates are explained in terms of intrinsic value derived from action. But if it is important to individuals that they participate, surely it matters how they participate? This paper tests the proposition that voters acquire more political information than those who abstain because they believe they have a duty to participate in collective decision‐making processes. It also considers the relevance of civic duty when explaining systematic differences between preferences expressed by those who vote and by those who abstain. Choice expressed at the ballot box is not the same as demand revealed in markets.