Surveys are a widely used tool to answer socio-economic research question across disciplines. However, data collection can face certain problems such as nonresponding units. For household and population surveys, a large body of literature about the effects of nonresponse exist but only less is...

Africa: A continent is waking up. Not through aid or wealth from the exploitation of natural resources, but through a technological revolution. The access to affordable mobile telecommunication. Inspired by deregulation and pioneered by local champions who have taken a lead in what is today's...

This study was prepared by Annika B. Bergbauer while she was working at the Ifo Center for the Economics of Education. It was completed in March 2019 and accepted as a doctoral thesis by the Department of Economics at the University of Munich in July 2019. It consists of four self-contained...