Theo Sandfort, trained as a social psychologist, was a tenured, Associate Professor at the Department of Clinical Psychology at Utrecht University, the Netherlands, and Director of the Research Program Diversity, Lifestyles and Health at the Netherlands Institute of Social Sexological Research (NISSO). Since 2001 he is Associate Professor and Research Scientist at the HIV Center for Clinical and Behavioral Studies. Since his time as a graduate student Theo Sandfort has been involved in numerous basic and applied empirical investigations in the field of sexuality and health. He has worked as in...