Inventive productivity and patent quality: Evidence from Italian inventors

This paper examines the inventive performances of a regional set of Italian inventors. After stressing that the distribution of the inventors’ productivity is extremely skewed, we find that patent productivity is not influenced by individual characteristics, but it is higher for the inventors working in teams or in large firms with greater patent portfolios. Instead, patent quality is associated with some individual features such as age, gender and level of education. Accordingly, patented innovations coming from inventors working in small firms or independently can be as valuable as those generated in large companies. The policy implications of these findings are discussed.     

MEASURING SELF‐CONTROL PROBLEMS: A STRUCTURAL ESTIMATION

Abstract We adopt a two‐stage Method of Simulated Moments to estimate the preference parameters in a life‐cycle consumption‐saving model augmented with temptation disutility. Our approach estimates the parameters from the comparison between simulated moments with empirical moments observed in the US Survey of Consumer Finances; to identify the parameters we consider moments from liquid and illiquid asset holdings at different ages. We find evidence of a small but significantly positive degree of temptation. The temptation model predicts consumption choices similar to the model with standard preferences, and holdings of liquid and illiquid assets closer to those observed in the empirical data.     

A micro analysis of the macro differences in refusal risk among metropolitan areas. The case of the Italian multipurpose survey

Although still modest, non response rates in multipurpose household surveys have recently increased, especially in some metropolitan areas. Previous analyses have shown that refusal risk depends on the interviewers' characteristics. The aim of this paper is to explain the difference in refusal risk among metropolitan areas by analysing the strategies adopted in the recruitment of interviewers through a multilevel approach. The Annual Survey on Living conditions is a PAPI survey of the "Multipurpose" integrated system of social surveys and it represents our data base. For non responding household, data on non response by reason, municipality and characteristics of the interviewer are available. The results highlight that those cities recruiting interviewers mainly among young students have a higher refusal risk. These results are particularly important as they indicate that recruitment strategies may have a substantial impact on non sampling errors. Acknowledgements An earlier version of this article was presented at the International Conference on Improving Survey, University of Copenhagen, Denmark, August 25-28, 2002. We would like to thank the participants to the presentation for their useful comments and suggestions. Opinions expressed are those of the authors and do not necessarily represent the official position of any of the institutions they work for.     

THEORIES OF THE STATE: THE CASE OF LAND REFORM IN ITALY, 1944–1961

This article examines the case of land reform in Italy from 1944 to 1961 in relation to the role of the State in capitalism. Through an analysis of recent debate on the capitalist State, it offers an investigation of the generation and outcomes of the process of land reform. It is important to note that the social pressure exerted by landless peasants and farm workers for the redistribution of land and the dissolution of the dominant social bloc generated the conditions for a land reform that only partially satisfied the needs of the agricultural working class. Simultaneously, the mediation of the State enhanced the overall interests of the domestic bourgeoisie. In this context, land reform produced contradictory results that favored the processes of accumulation of capital and legitimation of social dissent.     

Global Agro-Food Corporations and the State: The Ferruzzi Case

The relationship between transnational corporations (TNCs) in the agro-food sector and the nation-state in the context of global post-Fordism is examined through a case study of recent events involving the Ferruzzi transnational corporation. TNCs have a complex and contradictory set of relations with the state that are affected by competition among TNCs, by TNCs' internal disagreements, and by the fragmented nature of the state. The state assists TNCs through formal and informal channels. In this specific case, the informality of the system is underscored by the openly illegal arrangement that was operated for years by Ferruzzi officials and members of the officialdom of the state. However, the state also has the capacity to counter the actions of TNCs and to enforce the interests of subordinate groups.     

An R package for the simulation of correlated discrete variables

A package for the stochastic simulation of discrete variables with assigned marginal distributions and correlation matrix is presented and discussed. The simulating mechanism relies upon the Gaussian copula, linking the discrete distributions together, and an iterative scheme recovering the correlation matrix for the copula that ensures the desired correlations among the discrete variables. Examples of its use are provided as well as three possible applications (related to probability, sampling, and inference), which illustrate the utility of the package as an efficient and easy-to-use tool both in statistical research and for didactic purposes.