This article presents interdisciplinarity as a condition for Environmental Psychology, in a holistic approach and aiming at successful applied research. It discusses four questions referring to the conduction of interdisciplinary research and to the interaction between environment-behavior interdisciplinary research and methodologies: there are no methods without theory; methods in interdisciplinary dialogue: as communication, as political relation, to improve understanding; sharing methods should not be a unilateral transaction; and finally, interdisciplinary research in an ethical context.
Environmental psychology; Interdisciplinary research; Ethics