Proshansky, Fabian and Kaminoff formulate place-identity as the incorporation of the physical environment into the cognitive and affective structures through which the self is organised. Their central move is to refuse the treatment of place as an external stage for psychological life. Environments participate in memory, recognition, expectation and self-definition, becoming part of the sediment through which individuals understand continuity and difference. The methodological implication is that identity must be studied through environmental histories and spatial experience as well as through interpersonal and symbolic relations. Place-identity is therefore not a decorative attachment to identity theory but a mechanism by which physical surroundings enter processes of socialisation and self-recognition. The concept establishes a productive bridge between environmental psychology, cultural geography, memory studies and urban theory by showing that continuity is spatially mediated and that environments become repositories of social meaning without becoming static containers of it.