Interested in the evolution of (professional) commitment in complex societies, especially in the relationship between kinship-altruism and the divsion of labour in complex societies. (The evolution of the "Prinzip Verantwortung".) And that means also, that I'm interested in the demography of complex societies and their "Bevölkerungsweise" (Gerhard Mackenroth), their "demographic regimes". My topics are also the archaeological research of the first complex societies of mankind, the pre-pottery and pottery neolithic cultures in the Near East and Europe. I'm interested in the research about the economic and social history of pre-industrial european farming societies. I'm also fascinated by the reproductive benefits of religiosity ("Evolutionary Religious Studies"). Further I'm interested in the general questions about biological evolution and in all new trends in human genetics, sociobiology, the philosophy of a naturalistic worldview and the new forms of non-monotheistic religiosity and philosophy in the 20th century in Germany, Europe and worldwide.