Polling the opinions of the Dutch population on the nations future energy policy, the use of nuclear power in particular. Non-professional activities / political interest, efficacy, competence / knowledge of general social debate on energy and opinion on usefulness / is r informed about activities in GSD framework? / estimated influence of GSD / energy problems and technical solutions / quality of information on these problems from: mass-media, government, action groups / evaluation of energy supply options: coal, natural gas, mineral oil, nuclear power, wind energy, energy saving / evaluation of questionnaire procedure and information supplied in questionnaire / relative importance of economic, health, social factors in decision-making / the four files differ in type of questionnaire and used different samples. Background variables: basic characteristics/ residence/ household characteristics/ occupation/employment/ income/capital assets/ education/ politics/ readership, mass media, and 'cultural' exposure