Knowledge of issues of the collective wage agreement ( cao ) / attitude to general versus specific cao's / attitude towards moderation of wage-increase / attitude to strikes during the conflict in metallurgical industry / experiences during and perception of the strike attitude to trade-union policies during strike / influence on this policy / exposure to union leaflets / attitude to cooperation between unions / relationship with the militant members of the industry union of NVV / most important trade-union task. Background variables: basic characteristics/ residence/ place of work/ occupation/employment/ income/capital assets/ education/ readership, mass media, and 'cultural' exposure/ organizational membership