Commentators claim that a shortage of skills in South Africa is constraining output and that a rise in skill supply would benefit less skilled occupations. This assumes or implies skilled and unskilled labour are complements. Hicks Elasticities of Complementarity and elasticities of factor price...

Turning Europe into a leading `global knowledge-based` economy has become something of an obsession for policy-makers in the EU. From the integrated guidelines of the Lisbon Agenda to the July 2005 announcement of a new scientific European Research Council, considerable effort has been directed...

We will review the econometrics of non-parametric estimation of the components of the variation of asset prices. This very active literature has been stimulated by the recent advent of complete records of transaction prices, quote data and order books. In our view the interaction of the new data...

Securitisations usually involve creating multiple tranches of a single issue with different characteristics, placed on the market as separate securities. Various theoretical explanations have been advanced to explain such tranching. This paper provides the first systematic testing of such...

We analyze empirically the impact of urban agglomeration on Italian wages. Using micro-data from the Bank of Italy`s Survey of Household Income and Wealth for the years 1995, 1998, 2000 and 2002 on more than 22,000 employees distributed to 242 randomly drawn local labor markets (30 percent of...

We present a general Cournot model in which each firm may sell multiple quality-differentiated products. We use an upgrades approach, working not with the actual products, but instead with upgrades from one quality to the next. The properties of single-product Cournot models carry over to the...

We investigate determinants of launch spreads in European securitization transactions over the last decade. First, we develop a simple, reduced-form pricing model for all issues across different transaction types and test it. We document the critical importance of credit ratings without...

In an asymmetric war of attrition the players` prize valuations are drawn from different distributions. A stochastic strength ordering, based upon relative hazard rates, is used to rank these distributions. The stochastically stronger player is perceived to be strong ex ante, even though her...

What are the sources of productivity growth? Economic theory offers a panoply of explanations, considering the effects on productivity of organisational factors, research and development activity and factor accumulation, amongst other influences. Translating these theoretical models into...

This paper argues that the prevalence of compensation systems which reward winners without explicitly identifying losers can be rationalized by workers` concern for relative payoffs. If the workers` participation constraints are binding, the firm must compensate its employees for the disutility...