Dialogic Ethnographic Shift era
Shirley Brice Heath's ethnographic work, notably Ways with Words (1983), showed how talk patterns across communities mediate literacy and learning by foregrounding audience orientation and negotiated meaning in classroom and everyday settings. James Paul Gee's work in the 1990s reframed classroom discourse as social practice, introducing Discourse with a capital D and linking talk to identity, power, and access to learning. Norman Fairclough's critical discourse analysis supplied tools to trace power and ideology in classroom talk and to illuminate how talk can either constrain or expand equitable participation. Neil Mercer and colleagues further developed the study of classroom talk in the late 1990s, emphasizing dialogic, collaborative reasoning and the central role of talk as a medium for thinking and knowledge construction in schooling.