Contesting the “territorial aggression thesis” in environmental psychology,ca. 1965–1980

In the latter part of the 1960s, the ethologically derived idea of territoriality as an explanation for human aggression became widely debated among social scientists. The instinctual basis of human territorial aggression was promoted by so‐called popular ethologists and consequently embraced by lay audiences. The article examines how the emerging field of environmental psychology adopted the notion of human territoriality from ethology and made it into a part of their own research agenda. It shows how environmental psychologists were inspired by the fashion around the claimed relevance of human territoriality for the large‐scale social problems, such as aggression, war and population growth. Despite of the obvious influences and comparisons between animal and human behavior, many environmental psychologists wanted to contest not only the ‘territorial aggression thesis’ but also the relevance of animal studies for the analysis of human behavior.