Analysis of development of political attitudes and political behaviour. Political attitude and ideology / political interest / party preference / voting behaviour / left-right rating / opinions on: political goals, parties, action-groups, social groups, labour unions, churches, government, means of action etc. / political participation and efficacy / membership of organizations and clubs / details of parents: family situation, job, social status, education, political preference. Background variables: basic characteristics/ residence/ housing situation/ household characteristics/ characteristics of parental family/household/ occupation/employment/ income/capital assets/ education/ social class/ politics/ religion/ organizational membership