To measure several social-psychological, behavioural, and socio-economic attributes of smallholders and landless labourers in Costa Rica. The survey focused on those peasants engaged in agrarian capitalist production and hence avoided interviews with peasants whose primary means of production was subsistence farming. Variables The questionnaire establishes very carefully the precise nature of the relationship the respondent has to the land he works. It has several questions on political participation, trust in government, anomie, modernity, and attitudes towards unionization. The questionnaire also includes a section on paired-comparison preferences for peasant social status types.