The Association of Natural,Social and Economic Factors with Bird Species Richness in Rural England

At a global level, increasing emphasis on sustainable development highlights the importance of maintaining and enhancing biodiversity. Within the European Union, agricultural reforms will have a considerable influence on the links between biodiversity, agriculture and rural communities over the next 10–20 years. An understanding of the associations between biodiversity and the rural economy is important for the development of policies to promote environmentally sustainable economic and social well‐being. However, investigations of this type are frequently hindered by the different ways in which data in the natural and social sciences are collected. In this paper, we develop an innovative approach to combine data using a common spatial unit. We illustrate the application of this approach by examining associations between bird species richness, environmental and socio‐economic variables. Our results show how the statistical relationship between biodiversity and environmental factors is strengthened and contextualised by prevailing socio‐economic conditions. This example highlights the additional insights that can be gained from such an integrative approach, especially in terms of the questions it raises about the inter‐relationships between the social, physical and ecological dynamics of rural environments.     

Cooperative unionism and employee welfare

Using British national survey data, this article assesses the impact of unions on management practices to reduce labour costs, implement high‐performance work systems, and make employee welfare provisions. Relative to non‐union workplaces, those with unions are found to have practices which are consistent with ‘mutual gains’ outcomes.     

Why won't managers co-operate? Innovation and productivity in engineering

Drawing from her experience of participant-observation in an electrical engineering factory Caroline White contributes to the debate on Britain's continuing industrial problems. She concludes that the fundamental opposition of capital and labour in the capitalistproduction process explains the failure to tap the workers' reservoir of both commitment and creativity.     

Share-ownership schemes for employees – proposals and prospects

Recent statutory and other developments in the United Kingdom seem to have stimulated the introduction of share-ownership schemes for employees. This article considers the merits of such schemes, and their potential role within companies. The article also points up some weaknesses in the 1978 Finance Act, and suggests the need for caution on the part of those in industry who might contemplate the introduction of share-ownership arrangements.     

Conditional distributions of earnings,wages and hours for blacks and whites

This paper provides new evidence on the conditional distributions of earnings, wages and hours for white and black males in the University of Michigan's Panel Study of Income Dynamics. Conditional hours and ln wages are approximately normal for both races. Conditional earnings are approximately normal for blacks while earnings are well approximated for whites by the product of normal hours and log-normal wages. The distribution of this product is derived here for the first time. Treating the marginal earnings distribution as the average of the conditional distributions, we use these results to predict poverty and affluence rates in our sample.     

Unanticipated money,output, and prices in the small economy

A macroeconomic model for an open economy experiencing both domestic and international monetary disturbances is given. Expectations are assumed to be rational. Particular attention is focused on the reduced form coefficients for unanticipated domestic and foreign monetary disturbances under alternative exchange rate regimes.     

Use of the principal component method in the maximum likelihood estimation procedure of the logit model

The maximum likelihood estimates of a qualitative response market are solved by an iterative procedure. When severe multicollinearity exists among the explanatory variables, this procedure may fail to converge. In this note, using a bank-failure model, we demonstrate how the principle component method can make the iterative procedure converge when it fails to do so in the untransformed model.     

Tests for model specification in the presence of alternative hypotheses: Some further results

In Davidson and MacKinnon (1981), two of the present authors proposed a novel and very simple procedure for testing the specification of a nonlinear regression model against the evidence provided by a non-nested alternative. In this paper we extend their results in several directions. First, we relax a number of the assumptions of the previous paper; we admit the possibility that the nonlinear regression functions may depend on lagged dependent variables, and we do not require that the error terms be normally distributed. Second, we show how the earlier procedure may straightforwardly be generalized to the case where the two non-nested models involve different transformations of the dependent variable. Finally, we propose a simple procedure for testing non-nested linear regression models which have endogenous variables on the right-hand side, and have therefore been estimated by two-stage least squares.