Continuous items for most waves watching tv / reading papers / taking part in discussions on political issues / political knowledge / political participation / party preference / questions concerning importance of different political issues / left and right in politics. Wave 13: Exposure to weekly magazines / attitude to European community / attitude to use of car / car-free Sunday / action groups for car-drivers / personal involvement with pollution / evaluation of environmental qualities / attitude to pollution aspects / causes of pollution, is it sufficiently prevented / ranking for government spending money / rank order sympathy for political parties. Background variables: basic characteristics/ residence/ household characteristics/ occupation/employment/ income/capital assets/ politics/ religion/ organizational membership