I am an associate professor at the department of sociology of VU Amsterdam. Currently, there are two main lines in my research: (1) I study the social and psychological consequences of Internet use, and (2) I’m studying (effects of) participation in voluntary associations. Besides those two topics there are many other things I’m interested in (see publications). For instance: personal relationships, well-being, political behavior & attitudes, social capital, loneliness, social trust, religiosity, and income inequality & health.