Time Series Concepts for Conditional Distributions*

The paper asks the question – as time series analysis moves from consideration of conditional mean values and variances to unconditional distributions, do some of the familiar concepts devised for the first two moments continue to be helpful in the more general area? Most seem to generalize fairly easy, such as the concepts of breaks, seasonality, trends and regime switching. Forecasting is more difficult, as forecasts become distributions, as do forecast errors. Persistence can be defined and also common factors by using the idea of a copula. Aggregation is more difficult but causality and controllability can be defined. The study of the time series of quantiles becomes more relevant.     

Updating the Determinants of Firm Performance: Estimation using the 1998 UK Workplace Employee Relations Survey

We examine the determinants of establishment performance in the UK, using cross‐sectional data from the 1998 Workplace Employee Relations Survey to replicate research by Fernie and Metcalf (1995) who used data from the 1990 Workplace Employee Relations Survey; specifically, we test whether employee representation, contingent pay and efforts to boost employee participation affect a set of economic and industrial relations outcome indicators in the manner they suggest. We also re‐estimate the influential WERS90‐based study of Machin and Stewart (1996) on the links between union status and financial performance. In both cases we report very different results.     

The role of capital investment project teams in organisational learning

The management and organisation of capital projects in the British National Health Service (NHS) is dependent upon project teams. An analysis of four case studies shows how these teams also act as agents of learning for individuals and the organisation. This article considers the process by which learning came about. In particular it identifies the ability of the project teams to develop a parallel organisation within a wider organisational context. These teams develop specific rules, roles and relationships which help individual project team members to more effectively share their knowledge with others and their organisation.     

Risk and Capital Structure in the Regulated Firm

This paper studies the role of capital structure in a regulated firm. We show that it affects the prices set by the regulator, the expected price being lower the higher the proportion of debt finance. However, when debt is increased beyond a certain level, the benefit of lower expected prices is offset by their increased variability. We also study the socially preferred capital structure. This is such that consumers carry some risk, in the form of higher prices in adverse economic conditions.     

Corrigendum to “When is efficiency separable from distribution in the provision of club goods?” [Journal of Economic Theory 90 (2000) 204-221]

This note corrects a slip in Fraser's (J. Econ. Theory 90 (2000) 204-221) treatment of the necessary condition for partial separation of efficiency from distribution in providing a club good. His corrected Theorem 1 shows that many families of utility function can generate partial (and total) separation, thereby considerably extending the scope of his analysis.     

The Lifetime Distributional Impact of Government Health Outlays

This article examines the lifetime redistributive impact of government health outlays and finds that such outlays redistribute income from the lifetime rich to the lifetime poor and from men to women.     

Balance sheet conservatism and audit reporting conservatism

Financial reports are prepared on a going‐concern (GC) basis rather than a liquidation basis even when companies are highly distressed. This allows distressed companies to report book values of assets that greatly exceed their liquidation values, implying a lack of conservatism in the balance sheet. We argue that auditors issue going‐concern opinions in order to warn investors about this lack of balance sheet conservatism. This argument leads to two testable hypotheses. First, for companies that are at risk of bankruptcy, auditors are more likely to issue GC opinions when the book values of assets under the GC assumption are high relative to the expected liquidation values of assets (i.e., when the GC assumption causes the balance sheet to lack conservatism). Second, for companies that enter bankruptcy, the issuance of a prior GC opinion has predictive information content with respect to the wedge between the book values of assets and the future liquidation values of those same assets. Our results strongly support both hypotheses. The findings are important because they indicate that conservative audit reporting helps to compensate for a lack of conservatism in the balance sheet, which arises because the GC assumption permits the book values of assets to exceed their liquidation values.     

The last visitation of the plague in Sweden: the case of Bräkne‐Hoby in 1710–11

In an earlier study of the plague in Colyton, Devon, the household distribution of deaths was studied to see whether this provided a method of identifying the causative disease. In this article, a known epidemic of plague in the Swedish parish of Bräkne‐Hoby was studied as a means of testing out the generality of the household distribution of deaths. It was discovered that, in this case, the very heavy mortality was due to two radically different means of spreading the disease, initially the classic bubonic one through the rat flea, and latterly, and somewhat surprisingly, the pneumonic one, through the infection of the inhabitants by their own friends and neighbours.     

Can we improve the perceived quality of economic forecasts?

A number of topics are discussed concerning how economic forecasts can be improved in quality or at least in presentation. These include the following: using 50% uncertainty intervals rather than 95%; noting that even though forecasters use many different techniques, they are all occasionally incorrect in the same direction; that there is a tendency to underestimate changes; that some expectations and recently available data are used insufficiently; lagged forecasts errors can help compensate for structural breaks; series that are more forecastable could be emphasized and that present methods of evaluating forecasts do not capture the useful properties of some methods compared to alternatives.