"In the framework that has been known as Sociology of Science, we have studied the evolution of Environmental Psychology in Europe, how has been influenced by several factors: cultural and linguistic background marking developmental styles, different theoretical approaches, power relationships that have developed in the scientific community bath in social and intellectual aspects, and how these constitute two "Invisible Colleges". Two nucleis centers in Surrey and in Central Europe, are defined as power structures within the organization that shape the scientific community and that expresse themselves through the lAPS conferences, with two theoretical differentiated perspectives. Finally, we ask the question does a European Environmental Psychology exist? We find that the different characteristics give to it a certain entity, but the intellectual influence of USA drown this possible identity. This paper presents some results of a brouder publication that has already been completed. A preliminary study of this type was presented in Berlin in 1984."