Is it still possible to combine two programmes of study in higher education, and if so, what are the characteristics of these double-students and what kind of obstacles do they face? In the Netherlands, about 10 percent of students in university education take two studies at the same time. Different theoretical approaches offer hypotheses to explain the choice of students for a second study, compared to students who pursue the regular one-study programme. Human capital as well as financial (socio-economic) capital theory provides some insights in this choice process. Education programme-related factors, as well as motivational and (social and academic) integration (Tinto, 1987) factors, will possibly be important determinants for pursuing one or two study programmes in higher education.