Some simple mathematical models for adoption processes: The case of the comprehensive school reform in Norway

This article reviews simple mathematical models which have been or may be used for adoptation processes. Each model's role in the explanation process is analyzed.

The case of the spread of the comprehensive school reform in Norway is used to ilustrate an adoption process. The logistic, or chain-reaction model, and a normal model for independent adoption are emphasized. The fit of the curves for the provinces and the whole country favors the logistic model. Evidence of a “neighborhood effect” at the micro-level also points to a communication process.