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 4: Attitude to trade union for the military conscripted ( VVDM ) / opinions about army regulations / attitude to S5 ( mental instability ). Background variables: basic characteristics/ residence/ household characteristics/ occupation/employment/ income/capital assets/ politics/ religion/ organizational membership