Working papers SES

Working papers SES
La collection des Working Papers SES est une série de cahiers de recherche présentant les différents travaux menés au sein de la Faculté des sciences économiques et sociales de l'Université de Fribourg (Suisse). Cette collection existe depuis 1980 et les thèmes abordés reflètent les différentes orientations scientifiques des membres de la Faculté: économie politique, gestion d'entreprise, informatique de gestion, méthodes quantitatives, sciences sociales et sciences des médias et de la communication. Le contenu de ces travaux n'engage que la responsabilité de leurs auteurs.

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Université de Fribourg

Gender differences in wage expectations

Fernandes, Ana ; Huber, Martin ; Vaccaro, Giannina

(Working Papers SES ; 516)

Using a survey on wage expectations among students at two Swiss institutions of higher education, we examine the wage expectations of our respondents along two main lines. First, we investigate the rationality of wage expectations by comparing average expected wages from our sample with those of similar graduates; we further examine how our respondents revise their expectations when provided...

Université de Fribourg

Causal mediation analysis with double machine learning

Farbmacher, Helmut ; Huber, Martin ; Langen, Henrika ; Spindler, Martin

(Working Papers SES ; 515)

This paper combines causal mediation analysis with double machine learning to control for observed confounders in a data-driven way under a selection-on- observables assumption in a high-dimensional setting. We consider the average indirect effect of a binary treatment operating through an intermediate variable (or mediator) on the causal path between the treatment and the outcome, as well as...

Université de Fribourg

Bounds on direct and indirect effects under treatment/mediator endogeneity and outcome attrition

Huber, Martin ; Lafférs, Lukáš

(Working Papers SES ; 514)

Causal mediation analysis aims at disentangling a treatment effect into an indirect mechanism operating through an intermediate outcome or mediator, as well as the direct effect of the treatment on the outcome of interest. However, the evaluation of direct and indirect effects is frequently complicated by non-ignorable selection into the treatment and/or mediator, even after controlling for...

Université de Fribourg

Machine learning approach for flagging incomplete bid-rigging cartels

Wallimann, Hannes ; Imhof, David ; Huber, Martin

(Working Papers SES ; 513)

We propose a new method for flagging bid rigging, which is particularly useful for detecting incomplete bid-rigging cartels. Our approach combines screens, i.e. statistics derived from the distribution of bids in a tender, with machine learning to predict the probability of collusion. As a methodological innovation, we calculate such screens for all possible subgroups of three or four bids...

Université de Fribourg

M&A by Chinese POEs in developed countries : acquiring and bundling strategic assets

Wu, Juan ; Morschett, Dirk

(Working Papers SES ; 512)

Building on the resource-based view and based on 33 interviews with top executives of 11 Chinese private owned enterprises (POEs) and 15 Western target companies, this study is an in-depth multi-case analysis of Chinese crossborder merger and acquisitions. While literature has argued that acquisitions by Chinese companies in developed countries are motivated by asset-seeking, this study takes...

Université de Fribourg

Health consequences of sterilizations

La Rupelle, Maëlys de ; Dumas, Christelle

(Working Papers SES ; 503 (revised))

In India, as in many developing countries, female sterilization is the main contraceptive method: 37% of women older than 25 are sterilized. However, no economic study assesses the eect of sterilization, providing guidance on ecient reproductive health policies. We analyze the consequences of sterilization for maternal health, considering the endogeneity of the decision. We exploit that...

Université de Fribourg

Medical and long-term care with endogenous health and longevity

Schünemann, Johannes ; Strulik, Holger ; Trimborn, Timo

(Working Papers SES ; 505 (revised))

For the population over 65, long-term care (LTC) expenditure constitutes a considerable share in total health expenditures. In this paper, we distinguish between medical care, intended to improve one›s state of health, and personal care required for daily routine. Personal care can be either carried out autonomously or by a third party. In the course of aging, autonomous personal care is...

Université de Fribourg

The Korea discount and chaebols

Ducret, Romain ; Isakov, Dušan

(Working Papers SES ; 511)

Finance practitioners frequently claim that stocks of Korean firms are undervalued and trade at a discount relative to foreign firms. This phenomenon is commonly called «the Korea discount». It is based on anecdotal evidence comparing either the price- earnings ratios of different market indexes or those of different individual stocks. This paper provides empirical evidence on the existence...

Université de Fribourg

The patent buyout price for Human Papilloma Virus (HPV) vaccine and the ratio of R&D costs to the patent value

Songane, Mario ; Grossmann, Volker

(Working Papers SES ; 510)

Human papillomavirus (HPV) is responsible for almost all of the 530,000 new cases of cervical cancer and approximately 266,000 deaths per year. HPV vaccination is an integral component of the World Health Organization’s global strategy to fight the disease. However, high vaccine prices enforced through patent protection are limiting vaccine expansion, particularly in low- and middle-income...

Université de Fribourg

Patenting government funded innovations as a strategy to increase budget for academic vaccine R&D

Songane, Mario

(Working Papers SES ; 509)

Vaccine development is a lengthy, expensive and risky venture, with the research and development (R&D) process costing billions of dollars. The pre-clinical stage of vaccine R&D is largely performed by academic research institutions, then continued by the pharmaceutical industry though licensing agreements, taking the most promising candidates to the clinical testing stage. Governments play a...