Through case studies of lesbian movements in Costa Rica and Nicaragua,
this paper examines the phenomenon of identity-based movements, findi
ng that it embraces significant differences in the content and forms o
f collective identities. Nar social movement theory calls attention to
the role of identity in contemporary movements, but overlooks variati
on in the nature of identities. Resource mobilization and political pr
ocess theories, on the other hand, offer tools for explaining differen
ces, but have not generally been applied to cross-national comparisons
of movements around identity. Drawing on interviews with lesbian acti
vists in Costa Rica and Nicaragua, an participant observation, and on
archival research, I argue that three factors account for the differen
ces in the way movements in distinctive national contexts construct co
llective identities: 1) economic structure/model of development; 2) st
ate-civil society relations; and 3) the broader field of social moveme
nts.