THE BLACK-SCHOLES EQUATION REVISITED: ASYMPTOTIC EXPANSIONS AND SINGULAR PERTURBATIONS

In this paper, novel singular perturbation techniques are applied to price European, American, and barrier options. Employment of these methods leads to a significant simplification of the problem in all cases, by reducing the number of parameters. For American options, the valuation problem is reduced to a procedure that may be performed on a rudimentary handheld calculator. The method also sheds light on the evolution of option prices for all of the cases considered, the results being particularly illuminating for American and barrier options.     

Import Competition, Productivity, and Restructuring in UK Manufacturing

We discuss the literature on the importance of entry and exitfor raising productivity growth. Using micro data for the UKfor a period from 1980 to 2000, we find that the share of productivitygrowth accounted for by entry and exit has increased considerably:from around 25 per cent in the 1980s to around 50 per cent inthe 1990s. We then ask to what extent increased globalization—measuredas sectoral import penetration—might have explained thisand find effects from both globalization and information andcommunication technology.     

Class Size,Teacher Hours and Educational Attainment*

We employ a regression‐discontinuity design to identify effects on educational attainment after compulsory school of class size and the number of pupils per weekly teacher hour using administrative rules as instruments. We use Danish administrative panel data. Average class size is 20, about the same as in the US and most European countries. Restricting the sample to observations close to the enrolment discontinuity points where the administrative rules have greatest predictive power, instrumental variables estimates are consistently negative. Estimates from the preferred specification are marginally significant and indicate modest effects in line with earlier studies. Estimates for subgroups are less precise, but they indicate larger effects for pupils from less advantaged backgrounds.     

THE USE OF CONTRACT BY GOVERNMENT AND ITS AGENTS

Given that the provision of a service is being controlled by the state, the decision whether to contract out that service provision to the private sector is essentially a business decision. A number of economic advantages and disadvantages need to be offset against each other. Governments are poorly placed to make such decisions and it is no surprise that PPPs are often inefficient and steered by political objectives.     

Finite Sample Correction Factors for Panel Cointegration Tests*

In this paper we present finite T mean and variance correction factors and corresponding response surface regressions for the panel cointegration tests presented in Pedroni (1999, 2004) , Westerlund (2005) , Larsson et al. (2001) and Breitung (2005) . For the single equation tests, we consider up to 12 regressors and for the system tests vector autoregression dimensions up to 12 variables. All commonly used specifications for the deterministic components are considered. The sample sizes considered are T ∈ {10,20,30,40,50,60,70,80,90,100,200,500}.     

High performance work systems and workplace partnership: a case study of aerospace workers

This article provides case study analysis of the impact of high performance work practices and workplace partnership on skilled workers in the UK's aerospace industry. In contrast to assumptions that such practices increase empowerment and participation we find evidence of a democratic deficit in workplace decision-making and deterioration in the quality of working life.     

Estimating the Impact of WTO and Domestic Reforms on the Indian Cotton and Textile Sectors: a General-Equilibrium Approach

The agreement to abolish the quotas on textiles and clothing introduced under the Multi‐fiber Arrangement (MFA) will create a new and much more competitive world market for India's exports of textiles and clothing. India's inefficient and costly policies, such as cotton export quotas, the hank yarn obligation, and the restrictive policies on foreign investment that have held back productivity in the Indian apparel sector, will impose serious costs. The authors consider the implications of reforming these policies in an open trading environment using a multiregion, applied general‐equilibrium model. They find that the costs of these policies to India increase substantially following abolition of the MFA; the benefits to India from domestic reforms are considerably enhanced when there is global free trade in textiles and apparel.     

Agency theory: A falsificationist perspective

The purpose of this paper is to examine the empirical testability of agency theory from a falsificationist perspective. Following a brief discussion of economic methodology, the paper examines three main classes of agency models with a view to identifying the scope for empirical testing. With regard to the basic single period agency model, the paper argues that empirical researchers should direct their attention to generating and testing the comparative static implications of the model. For agency models with post-decision information, it is argued that the scope for empirical testing is likely to be severely limited by the researcher's inability to validate the truth value of the auxiliary hypotheses needed to generate empirically interesting implications. In addition, it is argued that considerable care needs to be exercised when interpreting the results of tests of “if and only if” propositions. These difficulties of interpretation are illustrated by reference to two recent attempts to test Holmstrom's theory of relative performance evaluation. Finally, it is argued that agency models involving pre-decision information are practically devoid of empirical content.