This article traces the historical and conceptual development of what is known as activity theory, from Vygotsky and Luria, to A. N. Leontev, to Engestrm, in order to illustrate what I see as two problems with the activity theoretic approach, especially as manifest in the work of Leontev and Engestrm: what I call the boundary and/or focus problem…

This article enters an ongoing discussion about the usefulness of different theories and different research designs in the analysis of classroom writing. Starting with questions about how students interpret the norms of writing and their own selves in school writing, it demonstrates the relevance of an ecological theory of writing,…

This article is concerned with characterizing literacy activity as it is practiced in professional workplaces. Its starting point is activity theory, which grew out of the work of Vygotsky and has been subsequently elaborated in Russia and elsewhere. First, the authors propose that existing versions of activity theory are unable to account…