Ideology often has been regarded by sociologists as an elusive and muddy concept. We believe that the understanding of this core concept can be improved by the use of constructs drawn from a pragmatic, interactionist perspective. We argue specifically that 1) ideologies are based on a set of relatively simple metaphors and images to which people respond on the basis of their shared experience and expectations; 2) ideologies are not purely cognitive, but depend principally on emotional responses; 3) ideologies are (...) presented at such times and in such ways as to enhance the public impression of presenters and/or adherents; ideological enactment is fundamentally dramaturgical and interactional; and 4) ideologies are linked to groups and to the relationships between groups, which in turn depend on a set of resources in order to enact ideologies effectively. Ideologies are symbolic, affective, behavioral, and relational. In focusing on these themes, we avoid some overabstract conceptions of ideology that are endemic in social scientific literature. Instead we emphasize how ideologies can be linked to lived experience and to social interaction-a microsociological grounding of ideology. To understand the dynamics of ideology we examine ideologies about the environment, drawing from an ethnographic investigation of amateur mushroom collectors. (shrink)