Quaderni di Dipartimento


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ISSN: 2279-9559 (dal n. 1 al n. 157), 2279-9567 (dal n. 158 al n. 363), 2279-9575 (dal n. 364 in poi)


  • Paper nr. 428
Title: Agricultural Productivity in Space - An econometric assessment on Italian farm-level data
Authors: Edoardo Baldoni, Roberto Esposti
This work aims to investigate the spatial dependence of agricultural Total Factor Productivity (TFP) by using farm-level data and aggregating them at a variable geographical scale. At this scale a multilateral TFP index is computed and the spatial and time dependence of this TFP measure is assessed within a spatial dynamic panel specification. Alternative Least Squares (LS), Maximum Likelihood (ML) and Generalized Method of Moments (GMM) estimation approaches are proposed and respective results compared. The application concerns Italian farm-level data over the period 2008-2015. Results suggests that higher productivity spillovers are found for those NUTS3 regions with similar neighborhoods in terms of production specialization. Higher spill-ins are found in those NUTS3 with a
larger number of geographical connections, regardless of their similarity in terms of production specialization.
JEL Codes: L16, O33
Keywords: Productivity Spatial Dependence, Technological Spillovers, Multilateral TFP index, Dynamic Panel Models


  • Paper nr. 427
Title: Productivity Differentiantion Along the Development Process: a "Meso" Approach
Authors: Massimo Tamberi
"Firms are different" and everyone knows it by direct experience: tendency toward a productivity differentiation is a consequence of the fact that, generally speaking, new goods and new processes are continuously introduced in the market. Nevertheless, imitation and firm selection tend to act as counter-balancing forces. It is possible to imagine that forces increasing firm differences (in term of productivity) act stronger in developing countries, and that, contemporaneously, the selection process is weaker in these same economies. Fragmentary empirical indications suggest that productivity differentiation among firms/sectors is effectively higher in poorer countries. This paper is a step to deep this question in more general terms: it proposes and empirically tests a "development" perspective to analyze productivity differentials, and this seems a substantial novelty. Results, with a few limits, support the hypothesis that inter-industry productivity differentials are negatively associated with the level of development. 
JEL CodesL16, O33
Keywords: productivity differentials, economic development


  • Paper nr. 426
Title: Dynamic panel probit: finite-sample performance of alternative random-effects estimators
Authors: Riccardo Lucchetti, Claudia Pigini
Estimation of random-effects dynamic probit models for panel data entails the so-called "initial conditions problem". We argue that the relative finitesample performance of the two main competing solutions is driven by the magnitude of the individual unobserved heterogeneity and/or of the state dependence in the data. We investigate our conjecture by means of a comprehensive Monte Carlo experiment and offer useful indications for the practitioner.
JEL Codes: C23, C25
Keywords: Dynamic panel probit; panel data; Monte Carlo study
  • Paper nr. 425
Title: If not now, when? The timing of childbirth and labour market outcomes
Authors: Matteo Picchio, Claudia Pigini, Stefano Staffolani, Alina Verashchagina
We study the effect of childbirth and its timing on female labour market outcomes in italy. The impact on yearly labour earnings and participation is traced up to 21 years since school completion by estimating a factor analytic model with dynamic selection into treatments. We find that childbearing, especially the first delivery, negatively affects female labour supply. Women having their first child soon after school completion are able to catch up with childless women only after 12-15 years. The timing matters, with minimal negative consequences observed if the first child is delayed up to 7-9 years after exiting formal education
JEL Codes: C33, C35, J13, J22
Keywords: Female labour supply; fertility; discrete choice models; dynamic treatment effect; facto