Firms are usually better informed than tax authorities about market conditions and the potential profits of competitors. They may try to exploit this situation by underreporting their own taxable profits. The tax authority could offset firms' informational advantage by adopting "smarter" audit...

According to the catastrophic health expenditure methodology a household is in catastrophe if its health out-of-pocket budget share exceeds a critical threshold. We develop a conceptual framework for addressing three questions in relation to this methodology, namely: 1. Can a budget share be...

We provide a parsimonious axiomatisation of the complete class of absolute nequalityindices. Our approach uses only a weak form of decomposability and does not require a priori that the measures be differentiable.

We show how classic source-decomposition and subgroup-decomposition methodscan be reconciled with regression methodology used in the recent literature. We alsohighlight some pitfalls that arise from uncritical use of the regression approach. TheLIS database is used to compare the approaches...

We introduce a model of redistributive income taxation and public expenditure. Thisjoint treatment permits analyzing the interdependencies between the two policies: onecannot be chosen independently of the other. Empirical evidence reveals that partisanconfrontation essentially falls on...

We use the delta method to derive the large sample distribution of multidimensional inequality indices. We also present a simple method for computing standard errors and obtain explicit formulas in the context of two families of indices.

Specific functional forms are often used in economic models of distributions; goodness-of-fit measures are used to assess whether a functional form is appropriate in the light of real-world data. Standard approaches use a distance criterion based on the EDF, an aggregation of differences in...

We study how fragmentation of patent rights ('patent thickets') and the formation of theCourt of Appeal for the Federal Circuit (CAFC) affected the duration of patent disputes, andthus the speed of technology diffusion through licensing. We develop a model of patentlitigation which predicts...

This paper specifies and estimates a structural dynamic model of consumer demand for newand used durable goods. Its primary contribution is to provide an explicit estimationprocedure for transaction costs, which are crucial to capturing the dynamic nature ofconsumer decisions. In particular,...

This paper studies the role of intrinsic motivation, reputation and reciprocity in driving open source software innovation. We exploit the observed pattern of contributions - the 'revealed preference' of developers - to infer the underlying incentives. Using detailed information on code...