0000000000140292
AUTHOR
María E. Rochina-barrachina
Selection Correction in Panel Data Models: An Application to Labour Supply and Wages
In recent years a number of panel estimators have been suggested for sample selection models, where both the selection equation and the equation of interest contain individual effects which are correlated with the explanatory variables. We review and compare some of these estimators, and apply them to estimating the return to actual labour market experience for females, using a panel of twelve years. All these estimators rely on the assumption of strict exogeneity of regressors in the equation of interest, conditional on individual specific effects and the selection mechanism. This assumption is likely to be violated in many applications. Also, life history variables are often measured with…
Reconsidering learning by exporting
Self-selection and learning by exporting are the main explanations for the higher productivity of exporting firms. But, whereas evidence on self-selection is largely undisputed, results on learning by exporting are mixed and far from conclusive. However, recent research by De Loecker (J Int Econ 73(1):69–98, 2007) has shown that the conclusions from previous learning by exporting studies may have been driven by strong assumptions about the evolution of productivity and the role of export status. Relaxing these assumptions turns out to be critical to find evidence of learning by exporting in a representative sample of Spanish manufacturing firms. Our results indicate that the yearly average …
Does Firm Size Affect Self-selection and Learning-by-Exporting?
The trade literature has long discussed the existence of some benefits attributed to exporting, among others, the improvement of firm productivity. This paper examines whether firm size plays a role in this supposedly favourable relationship between exporting and total factor productivity (TFP). To examine this, we investigate, separately for large and small firms, whether firms starting to export perform better ex ante (self-selection) than non-exporting firms and, conditional on this fact, if they are also more productive ex post (learning-by-exporting). With this purpose, we use both stochastic dominance and matching techniques. The dataset is a representative sample of Spanish manufactu…
The Export Strategy and SMEs Employment Resilience During Slump Periods
Abstract The Spanish economy was the most hit by the Great Recession. It suffered a greater decrease in the gross domestic product (GDP) (affecting especially internal demand). However, it suffered a greater increase in exports (the so-called Spanish “miracle”). Particularly, Spanish SMEs incorporation into exports has been spectacular since 2008. Further, this has coincided with a huge increase in unemployment. Therefore, our main objective is to investigate the moderating role of exports in job destruction associated with recessive contexts of domestic demand using Spanish manufacturing SMEs as a case study. We obtain for SMEs that export participation helps compensate for the decrease in…
Self-Selection into Exports: Productivity and/or Innovation?
Abstract Recent research has related the firm decision to export with firm innovation activities and productivity. The aim of this paper is to disentangle the direct and indirect links through which self-selection into exports, coming both from productivity and innovation, may operate. For this purpose we use Spanish manufacturing firm data for the period 1990–2000, drawn from the Encuesta sobre Estrategias Empresariales. The main results we obtain can be summarized as follows. First, there is a self-selection into exports direct effect coming from productivity. Second, there is also a self-selection indirect effect into exports stemming from productivity to the probability of exporting thr…
THE ROLE OF SUNK COSTS IN THE DECISION TO INVEST IN R&D
We present a dynamic empirical model of a firm's R&D decisions that is consistent with the existence of sunk R&D costs, taking into account that these costs may differ between small and large firms, and among different technological regimes. We estimate a multivariate dynamic discrete choice model using firm-level data of Spanish manufacturing for 1990–2000. Conditional on firm heterogeneity and serially correlated unobservable factors, we find that R&D history matters. This true state dependence allows inferring the existence of sunk R&D costs associated with performing R&D. Sunk R&D costs are found to be higher for large, high-tech firms.
Competitive Pressure and Innovation at the Firm Level
This paper provides empirical evidence on the relationship between market competitive pressure and firms' innovation using panel data of Spanish manufacturing firms for 1990–2006. We depart from standard measures of competition, and construct variables capturing the fundamentals of competitive pressure (product substitutability, market size and entry costs) to test the theoretical predictions of Vives [2008, The Journal of Industrial Economics] for free entry. Our results line up favourably with these predictions. We obtain that greater product substitutability and higher costs of entry lead to more process innovation but less product innovation, whereas market enlargement spurs both produc…
The impact of the Great Recession on TFP convergence among EU countries
ABSTRACTThis article provides evidence on the effect of the Great Recession on productivity convergence among European Union (EU) economies. We use firm data, aggregated at the country-year level, to analyse the evolution of beta-convergence on total factor productivity (TFP) for 2003–2014. We obtain a positive impact of the recession on TFP (unconditional and conditional) beta-convergence across EU economies. These results support the existence of a catching-up process within the EU during the recent financial crisis. Other macroeconomic and institutional characteristics are important in fostering TFP growth, namely R&D intensity and quality of governance.
Learning through experience in Research & Development: An empirical analysis with Spanish firms
In this paper we analyse the role of learning through experience in Research and Development (R&D) activities in strengthening firms' capabilities to achieve innovation outcomes and, subsequently, in obtaining rewards in terms of firms' performance. First, using an innovation production function approach, we estimate a count-data model and find that the number of years of engagement in R&D activities, or R&D experience, has a positive effect on the expected number of product innovations, although at a decreasing rate. In addition, our results suggest that, whereas large firms are more efficient than SMEs in converting R&D investment into product innovations, SMEs seem to be able to draw eff…
Foreign sourcing and exporting
The aim in this paper is analysing the role of sourcing intermediate inputs internationally on export decisions, distinguishing whether intermediate are sourced from firms belonging to the same business group or from independent suppliers. To analyse firm’s export decision, we use a specification that also accounts for sunk costs and the accumulated experience in export markets (i.e., foreign markets learning). We consider that importing intermediates might have direct and indirect effects (operating through productivity) on the export participation decision. The direct effects on exporting are isolated once we control for productivity and the effects of belonging to an international group.…
The path of R&D efficiency over time
Abstract In this paper we investigate the pattern of R&D efficiency in terms of the number of product innovations achieved by firms over time. Using a panel dataset of Spanish manufacturing firms for the period 1990–2006, we follow the innovative performance of R&D active firms and observe that innovation rates change over firms' R&D histories. To explain these facts we propose a model that explicitly acknowledges the twofold composition of firms' R&D expenditures, comprising spending on both physical capital for R&D projects and payments to researchers. We regard this latter component of R&D as a source for dynamic returns to firms' R&D investments. Consequently firms' innovation outcomes …
Financial constraints and R&D and exporting strategies for Spanish manufacturing firms
We investigate the role of internal and external financial constraints in the firms� joint decision to export and invest in R&D. We use objective measures at the firm level such as cash flow and financial costs. We further analyze both if firms� size and the onset of the current economic crisis have had an impact. We estimate our model with Spanish manufacturing firms for the period 1990�2011, and obtain that both internal and external financial constraints are relevant.
Foreign capital, credit constraints and continuity of firms’ R&D
ABSTRACTIn this article, we investigate the role of foreign capital participation as a means for firms to overcome the obstacle posed by credit constraints to sustain R&D investments. Using data for Spanish manufacturing firms in the period 1990–2006, we show that firms with foreign capital are significantly less likely to stop already initiated R&D projects and also more likely to sustain R&D investment when facing credit constraints. Our results are robust to positive selection into foreign capital participation, which we control through a set of variables chosen from a propensity score estimation, and to firms’ fixed-effects.
Patents, Competition, and Firms’ Innovation Incentives
This paper presents fresh evidence on the interaction between industrial property rights (patents) and competition, and their joint effect on firms’ innovation. We use panel data of Spanish manufacturing firms for 1990–2006, as well as external information on European Patent Office and US Patent Office patent counts. We construct a new synthetic measure of competition and estimate the impact of patents on this measure at the industry level. Then, the effect of industry-wide competition and patenting on firms’ innovation is estimated at the firm level. Our results suggest that patents reduce the level of competition in the industry, whereas the effect of competition on innovation varies with…
Selection correction in panel data models: An application to the estimation of females' wage equations
In recent years a number of panel estimators have been suggested for sample selection models, where both the selection equation and the equation of interest contain individual effects which are correlated with the explanatory variables. Not many studies exist that use these methods in practise. We present and compare alternative estimators, and apply them to a typical problem in applied econometrics: the estimation of the wage returns to experience for females. We discuss the assumptions each estimator imposes on the data, and the problems that occur in our applications. This should be particularly useful to practitioners who consider using such estimators in their own application. All esti…
Competition and innovation with selective exit: an inverted-U shape relationship?
This paper extends the approach of the inverted-U relationship between competition and innovation at the industry level introduced by Aghion and coauthors. We use data of Spanish manufacturing firms from the Survey of Business Strategies (ESEE) spanning 1990–2006, as well as external information on patents from the European Patent Office and US Patent Office. Instead of an inverted-U shape, we obtain an unambiguous positive relationship between competition and patents. To explain this positive relationship, we modify their theoretical model to introduce the possibility of inefficient firms facing the threat of exit when competition intensifies. The modified model may explain both a positive…
Product and process innovation and total factor productivity: Evidence for manufacturing in four Latin American countries
The literature on firm productivity recognizes the important role played by firm innovation activities on firm productivity in developed countries. However, the literature for developing and emerging economies is scarce and far from conclusive. The aim of this paper is to study the innovation–productivity link (distinguishing between process and product innovations) for manufacturing at the firm level for four Latin American countries (two classified as upper-middle income countries by the World Bank—Argentina and Mexico—and two as lower-middle income—Colombia and Peru). We aim testing whether the level of development is a mediating factor in the innovation–productivity link. The data used …
The Dynamic Linkages Among Exports, R&D and Productivity
This paper estimates a dynamic model of a firm's decision to export and invest in RD in the second step, we estimate a bivariate dynamic model of the firm's decision to invest in R&D and export, in which we analyse the linkages among investing in R&D, exporting and productivity. Using a representative sample of Spanish manufacturing firms for the period 1990–2009, we find that both export and R&D positively affect future productivity, which will drive more firms to self-select in those activities.