Surviving Between the Trenches: Planning Research, Methodology and Theory of Science

Planning research-understood as research aiming to improve the body of knowledge on which spatial planning is based-includes issues rooted both in the social sciences, natural science and the humanities. Spatial planners need knowledge about the likely consequences of different alternatives of action, as well as understanding of the role of plans and planning processes in the development of society. This is reflected in the two-fold focus of planning research on both substantive and procedural issues. Whereas research on the role of plans and planning processes takes place mainly within a non-positivist social science paradigm, the research aiming to provide planners with the knowledge needed in order to make good plans is often situated in the battlefield between opposing positions within theory of science. Because planning research has both society and the physical as its subject of inquiry, a reflective opinion about the interaction between the physical environment and human actions is crucial. Traditionally, many spatial planners have conceived of this in a quite näive way, assuming that human behaviour can to a high extent be shaped or controlled by manipulating the physical environment. During recent decades, this view has been sharply criticized by anti-positivist scholars, and some theorists point out the great uncertainty, close to impossibility, in predicting human actions, even at an aggregate scale. The latter position has dramatic implications to spatial planning, as it would then be impossible to assess whether a certain physical solution is likely to have positive or negative social and related environmental consequences, e.g. in terms of travelling distances and modal split. Our own position is that the physical environment, along with a number of individual and non-physical structural factors, influences human activities and quality of life. To some extent, this influence can be predicted at an aggregate scale, but not for a particular individual (except those actions rendered impossible by the laws of physics). How strong influence the physical environment exerts, is a question requiring empirical research in order to be answered.