Cumulative inertia

The cumulative inertia (literally "accumulation of immobility") is a model from migration research . It was set up by Alden Speare . It says that the duration of a state has a negative impact on its rate of change: " [T] he probability of an individual staying in a particular place increases with increasing length of residence " (Speare 1970: 456, quoted from Frick 1996: 46f.)

For example, the influence of length of residence on regional mobility is negative. It is applied almost exclusively to mobility , but can also be used for other phenomena: the probability of divorce decreases continuously from the third year of marriage.

The sickle function is another model of social research that schematizes processes of change.

Web links

• Sonja Haug: Should I stay or should I go? Determinants of the return decision among Italian immigrants in Germany. (PDF, 90 kB)

literature

• Alden Speare Jr .: Home Ownership, Life Circle, and Residential Mobility. In: Demography. 7, 4, 1970, pp. 449-458.
• I. Molho, IR Gordon: Duration dependence in migration behavior: Cumulative inertia versus stochastic change. 1995. In: Environment and Planning A, 1995, Vol. 27, No. 12, pp. 1101 ff.
• G Hyman: Cumulative inertia and the problem of heterogeneity in the analysis of geographical mobility. 1974 (Research papers / Center for Environmental Studies)
• Joachim Frick: Changing situations in life: determinants of small-scale mobility in West Germany. [Project group "The Socio-Economic Panel" in the German Institute for Economic Research, Berlin]. Campus, Frankfurt a. M., New York 1996