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 8: Exposure to mass-media and interest patterns / perception of crime increase, personal experiences, contacts with police / participation in sport / exposure in mass-media / experiences with sport in youth / perception of political parties on left, right dimension. Background variables: basic characteristics/ residence/ household characteristics/ occupation/employment/ income/capital assets/ politics/ religion/ organizational membership