Activity‐based analysis of sociotechnical change.

In this paper, we introduce activity‐based analysis (ABA) for explaining and learning about sociotechnical system change at the societal function level. The analysis is based on a novel conceptualization of sociotechnical systems as activity systems, and change as result of the resolution of contradictions that develop within and between activities carried out for the fulfilment of societal functions. We develop ABA for the specific domain and employ it in the construction of a narrative explanation of the evolution of the food/nutrition sociotechnical system from the institutionalization of processed food to the emergence of medical nutrition. [ABSTRACT FROM AUTHOR]