To what extent does possible selectivity in participation in participation-procedures lead to selectivity in participation results. Interest in local and regional news / connections and contacts / opinion about role of government / information, knowledge about and participation in particular procedures for regional physical planning / opinion about result of participation / specific problems in home town / annoying smell from agricultural industry / relation citizen, local government / housing / relation native and new inhabitants / social facilities, traffic and public transport / preferred areas for town enlargement. Background variables: basic characteristics/ residence/ household characteristics/ occupation/employment/ income/capital assets/ education/ politics/ consumption of durables/ readership, mass media, and 'cultural' exposure/ organizational membership