Mareva Sabatier

Social Capital and Wages: An Econometric Evaluation of Social Networking's Effects

The goal of this paper is to get an econometric evaluation of the effects of the social networks mobilization, as a job search strategy, on wages. We make use of switching regression models to deal simultaneously with an endogenous selection issue in the networks choice and the existence of two different regimes of wage determination. Econometric estimates provide evidence for the existence of a selection effect on the choice of network but, after correcting the selection bias on the wage equations, the effect of social network on wages is negative.

THE IMPACT OF ORGANISATIONAL CONTEXT AND COMPETENCES ON INNOVATION AMBIDEXTERITY

Research into organisation theory contains abundant evidence of the positive effects of ambidexterity on a firms performance, and of the influence of organisational context on ambidexterity. The present research tests whether organisational context affects innovation ambidexterity. Our results, based on a dataset of 108 large innovative firms, show that firms combining exploration innovation and exploitation innovation should adopt long-term practices that favour risk-taking and creativity, and thereby build an organisational context suited to innovation ambidexterity. Competences were found to have a strong moderating effect. These results have important managerial and theoretical implications. In the case of innovation, firms that simultaneously pursue exploitation and exploration activities should carefully consider how they combine competences and organisational context.

A women’s boom in the boardroom: effects on performance?

This article analyses whether improving gender diversity in boardrooms improves firms’ economic performance. In the context of French CAC40-listed companies between 2008 and 2012, this research uses instrumental variable panel regressions, including production frontier estimates, to arrive at two key results. First, gender diversity in boards depends on firms’ attributes including their previous gender promotion strategies. Second, promoting women in boardrooms has a significant and positive effect on economic performance while accounting for the endogeneity boards’ gender diversity. Gender diversity even reduces corporate inefficiencies and enables firms to come closer to their optimal performance.

Do Female Researchers Face a Glass Ceiling in France? A Hazard Model of Promotions

The present article examines whether French female researchers face a glass ceiling, an invisible barrier to promotion. Using an original database from the National Institute for Agricultural Research (INRA), we estimate duration models for promotions. The methodology used allows us to take into account censored observations and unobserved heterogeneity. Our results show a significant gender effect that does not contradict the glass-ceiling hypothesis. In addition, factors that boost promotion seem to be radically different according to gender and we present evidence that promotion strategies are different for males and females.

Does Productivity Decline After Promotion? The Case of French Academia

The present research examined the effect of promotion decisions on ex-post productivity in French academia. As, once promotion decisions are known, most external incentives vanish for promoted candidates, their productivity was expected to decrease. This hypothesis was tested by using an original dataset and matching methods to evaluate the impact of promotion on publication scores. The robustness of the matching estimates was tested using sensitivity analysis. The results clearly show that the removal of extrinsic incentives following promotion does not lead to a fall in productivity in French academia.

Should I stay or should I go? An econometric analysis of retirement decisions by couples

ABSTRACT This article analyses retirement decisions from a household perspective, treating the retirement timing of spouses as potentially interdependent choices. To identify the determinants of retirement decisions by couples and the effects of spousal retirement, this research estimates bivariate probit models in a multi-country setting. The results show a significant joint retirement trend: both men and women are more likely to retire if their spouse already has retired. Strong asymmetric behaviours arise by gender though, with high crosscountry heterogeneity, reflecting institutional differences in both pension and public health systems.

Publish or Teach? The Role of the Scientific Environment on Academics’ Multitasking

The scientific environment might influence university researchers’ job designs. In a principal–agent model, researchers must choose between substitutable tasks, publishing or teaching, according to their individual abilities and the scientific and pedagogical context that exists in their universities. This proposed model shows that scientific production can increase, regardless of researchers’ abilities, if the scientific environment favours agglomeration effects. The authors test these predictions using an original data set of French economics professors that reveals their individual investments in both teaching and publishing. The econometric results confirm that the tasks conflict and that the scientific context affects researchers’ investments in each task.(This abstract was borrowed from another version of this item.)