It has been frequently observed in the literature that many multivariate statistical methods require the covariance or dispersion matrix ∑ of an elliptical distribution only up to some scaling constant. If the topic of interest is not the scale but only the shape of the elliptical...

Many different robust estimation approaches for the covariance or shape matrix of multivariate data have been established until today. Tyler's M-estimator has been recognized as the 'most robust' M-estimator for the shape matrix of elliptically symmetric distributed data. Tyler's Mestimators for...

Many different robust estimation approaches for the covariance or shape matrix of multivariate data have been established until today. Tyler's M-estimator has been recognized as the 'most robust' M-estimator for the shape matrix of elliptically symmetric distributed data. Tyler's Mestimators for...

This paper examines the effects of taxation on long-run growthin a two-sector endogenous growth model with (i) physical capitalas an input in the education sector and (ii) leisure as anadditional argument in the utility function. The analysis of theeffects of taxation - including income...

Standard economics is regarded as the theory of the market system. Profit is the pivotal phenomenon of this system. Contrary to expectations, though, profit is neither well defined not fully understood. The frailty of the theoretical core is passed on to the subfields. This paper provides a...

This paper estimates the effects of tax changes on the U.K. economy. Identification is achieved by isolating the ‘exogenous’ tax policy shocks in the post-war U.K. economy using a narrative strategy as in Romer and Romer (2010). The resulting tax changes are shown to be unforecastable on the...

This paper shows that dynamic inefficiency can occur in dynamic general equilibrium models with fully optimizing, infinitely-lived households even in a situation with underinvestment. We identify necessary conditions for such a pos- sibility and illustrate it in a standard R\&D-based growth...

Fiscal policy is particularly relevant in dollarized economies. For the case of Ecuador, we analyze the effects of taxes and public spending on the overall performance of the economy for the period 1993-2009. To do this, we use a structural autoregressive vector model (SVAR) incorporating the...

This paper constructs a narrative account of all legislated discretionary policy changes in the United Kingdom from 1945 to 2009. Following Romer and Romer (2009, 2010), evidence of the policymakers’ motivation is presented from U.K. official Budget documents together with technical notes,...

This paper shows that dynamic inefficiency can occur in dynamic general equilibrium models with fully optimizing, infinitely-lived households even in a situation with underinvestment. We identify necessary conditions for such a possibility and illustrate it in a standard R&D-based growth model....