  This paper presents a simple model to measure the relative economic growth of
economic systems. The model considers S-Shaped patterns of economic growth
that, represented with a linear model, measure how an economic system grows in
comparison with another one. In particular, this model introduces an approach
which indicates if the economic system has a process of economic growth,
development or under development. The application of the model is provided for
regions and macro regions of the Italian economic system.
