This paper details the findings of research which examined the socioeconomic and attitudinal circumstances of a sample of farms participating in a range of agro-environment schemes and initiatives in Southwest England. Evidence from very diverse circumstances revealed a common fundamental trend, namely that the attitudinal dispositions of farmers were more important than their 'structural' constraints or opportunities in influencing farm decision-making. The attitudes of farmers held sway in the attitude-structure relationship, specific family, and thus financial circumstances were rarely associated with predictable farming or conservation activities. These findings support the notion that in order to better understand and influence farm decision-making, we need to know more about how farmers' attitudes and values are constructed. Agro-environment policies could employ mechanisms for targeting and enhancing farmers' personal attitudes and ambitions in relation to the environmental impact of their activities. (C) 1997 Elsevier Science Ltd.