is considered as another big barrier to most of the mobile students, not only the credit mobile students. Female mobile students have some particular barriers because of their gender role. The female mobile students, especially who are in older in age, are tied to a specific spatial context by private responsibilities. For example, partnering and children will have a great effect on the female's academic mobility. Some findings from qualitative interviews with researchers from Bulgaria and Poland, confirmed the great significance of personal and family relationships for female's academic mobility, either as a barrier or as an incentive. Researchers Researchers are employed on casualised temporary contracts in some universities, which force them to relocate around every three years when funding streams change, typically to another country. Historically this was done just one for a "postdoc" research project, but modern funding now devotes far more money to contract research than teaching posts, and so most researchers now face a whole career of living in this way. This often leads to the breakup of their families and friends and sometimes to mental health problems. With 57% of its researchers coming from other countries, Switzerland is the country with the world highest proportion of foreign researchers. Canada, Australia, the United States, Sweden and the United Kingdom have between 30 and 50% of their researchers coming from foreign countries. The Netherlands, Germany, Denmark, Belgium and France have between 10 and 30% of their researchers coming from foreign countries. Brazil, Spain, Japan, Italy and India have less than 10% of their researchers coming from foreign countries. Switzerland and India are among the countries with the highest proportion of their researchers going to work in other countries. Notes and references See also Student exchange program Erasmus programme University Mobility in Asia and the Pacific Virtual mobility UNESCO Academic Mobility Network Mobility Study abroad programs