1. Department of Economics and Public Finance, Facultad de Ciencias Económicas y Empresariales, Universidad Autónoma de Madrid, Avenida Francisco Tomás y Valiente, 5. Ciudad Universitaria Cantoblanco, Madrid 28049, Spain
2. Research Institute on Higher Education and Science, C/ Madrid, 128, Getafe 28903, Spain
3. Department of Management, Birkbeck, University of London, Malet Street, London WC1E 7HX, UK
4. Department of Business, Faculty of Economics and Business, Universitat de Barcelona, Diagonal, 690, Barcelona CP 08034, Spain