Cultural-historical activity theory: founding insights and new challenges

The article presents central ideas and future challenges of cultural-historical activity theory, focusing specifically on the work of the so-called Helsinki school of activity theory. We first introduce the revolutionary roots of the theory in the works of Marx and Vygotsky, and the evolution of the unit of analysis through different generations of activity theory. We then discuss the foundational role of historicity and dialectics in activity theory. We identify two central epistemological-methodological principles that guide activity-theoretical studies, namely the principle of double stimulation and the principle of ascending from the abstract to the concrete. These principles lead us to emphasize formative interventions as a powerful way to conduct societally impactful activity-theoretical research. We conclude by pointing out some major challenges facing activity theory in the 21st century.