Interest in recreation park de 'Hoge Veluwe' 1966

Motivations for visiting the park. Background variables: basic characteristics/ residence/ occupation/employment/ income/capital asset

Sociological factors influencing divorce 1967

Detailed background data on own husband, parents and ex-husband / religious attitude / experiences during courtship / premarital sexual relations / what happened after divorce ( house, children ) / relationships with both families / friends / problems in financial matters / different hobbies / children / drinking problems of self and husband / personality descriptions of former husband and self / reasons for divorce ( also for husband's wife ). Background variables: basic characteristics/ household characteristics/ occupation/employment/ education/ religio

Afvloeiing uit en aanpassing in de landbouw 1968

Farm and personnel / successor / attitude to change in modern times / contacts with immigrants / status of farmers / attitude to the farmer's work / motivations to leave farming / work type preferences / expectations for the future / attitude to reconstruction / re-allocations / cooperation / biographical data / personal history data / job prestige / memberships of organizations / job preferences ( diads ) / motivation to change / satisfaction / prestige of farmers / geographical mobility / recreational behaviour / attitude to change / general motivations. Background variables: basic characteristics/ residence/ housing situation/ household characteristics/ occupation/employment/ income/capital assets/ education/ consumption of durables/ readership, mass media, and 'cultural' exposure/ organizational membershi

Divortium 1967 : Sociologische faktoren van invloed op echtscheiding

Detailed background data on own husband, parents and ex-husband / religious attitude / experiences during courtship / premarital sexual relations / what happened after divorce ( house, children ) / relationships with both families / friends / problems in financial matters / different hobbies / children / drinking problems of self and husband / personality descriptions of former husband and self / reasons for divorce ( also for husband's wife ). Background variables: basic characteristics/ household characteristics/ occupation/employment/ education/ religio