The distribution of household consumption-expenditure budget shares

This paper explores the statistical properties of household consumption-expenditure budget share distributions – defined as the share of household total expenditure spent for purchasing a specific category of commodities – for a large sample of Italian households in the period 1989–2004. We find that household budget share distributions are fairly stable over time for each specific category, but profoundly heterogeneous across commodity categories. We then derive a parametric density that is able to satisfactorily characterize (from a univariate perspective) household budget share distributions and: (i) is consistent with the observed statistical properties of the underlying levels of household consumption-expenditure distributions; (ii) can accommodate the observed across-category heterogeneity in household budget-share distributions. Finally, we taxonomize commodity categories according to the estimated parameters of the proposed density. We show that the resulting classification is consistent with the traditional economic scheme that labels commodities as necessary, luxury or inferior.     

Credit card debt and consumption: evidence from household-level data

This research investigates the relationship between credit card debt and consumption using household level data. This is a departure from the previous studies which have used aggregate measures of consumption and general debt such as the Debt Service Ratio or total revolving credit. We use a detailed monthly survey of credit card use to impute credit card debt to respondents from the Consumer Expenditure Survey sample. In contrast to some earlier studies using aggregate data, we find a negative relationship between debt and consumption growth. Our work shows that a $1000 increase in credit card debt results in a decrease in quarterly consumption growth of almost 2%. Investigations are also made into effects of debt within different age categories and into the impact of expected income growth on the debt–consumption relationship.     

Pricing General Barrier Options: A Numerical Approach Using Sharp Large Deviations

In this paper we develop simulation techniques in order to evaluate single and double barrier options with general features. Our method is based on Sharp Large Deviation estimates, which allow one to improve the usual Monte Carlo procedure. Numerical results are provided and show the validity of the proposed simulation algorithm.     

On Some Effects of International Fragmentation of Production on Comparative Advantages,Trade Flows and the Income of Countries

In traditional trade models, whether based on technological differences or on relative factor endowments, merchandise composition and directions of trade are derived from closed‐economy conditions. But nowadays one of the basic assumptions of traditional trade models, i.e. that production processes are integrated within just one country, is being increasingly violated as previously integrated productive activities are segmented and spread over an international network of production sites: as a result, an increasingly large share of trade flows is made up of intermediate and unfinished goods being transferred from one country to another in order to be processed. In this paper we submit that such new configuration of production processes has important effects on at least three dimensions of economic research. First, we show that international disintegration of production processes leads to a lessening of the power of comparative advantages when it comes to explaining both merchandise composition and directions of trade, while it is the concept of absolute advantage to become increasingly relevant; second, we show that empirical measures of revealed comparative advantages are inherently misleading if they do not account for differences in the stage‐of‐processing of traded goods; third, we estimate a simple model of aggregate demand accounting for international trade in intermediates: results of estimation lend support to our prior that participation of a country in the process of international fragmentation of production plays a specific and significant role in determining its year‐over‐year change in GDP.     

Correction: Technology and productivity growth

Business Economics -     

Securities class actions in the US banking sector: Between investor protection and bank stability

This paper investigates whether securities class actions (SCAs) can play a role in banking supervision, both as a warning signal of insolvency and as an instrument of market discipline to encourage bank managers to carefully evaluate risk. Two groups of US banks are compared over the 2000–2008 period. One includes banks that have faced at least one SCA, while the other is composed of non-targeted banks (control group). Results indicate that collective private litigation procedures are more frequently directed at financially fragile intermediaries exhibiting inadequate governance standards. Furthermore, banks which have been subjected to SCAs are likely to reduce their excessive risk positions. This supports the idea that SCAs could be efficiently employed as a complement to public supervisory activity in the banking sector.     

Foreign direct investment in the banking sector: the case of Italian banks in the '90s

The present paper addresses the issue of the determinants of the growth of multinational banks upon foreign markets at a micro individual level. Theories and approaches suggested so far about globalisation of the banking sector basically relate banks' international growth to the theory of the multinational enterprise. Accordingly, this paper relies on the eclectic paradigm, which views the foreign direct investment decision to be a combination of ownership, internalisation and location advantages. Empirical evidence is provided through an econometric model based on count data techniques, with reference to the Italian case in the decade 1989–1999. Results show that the availability of resources and international experience already gathered by the parent banks have positive effects on their decision to undertake direct investments abroad. Multinational banks are also proved to grow internationally in order to internalise their pre-existing bank–client relationships, and to locate their foreign units where they can exploit positive externalities related to the presence of important international financial centres.