ABSTRACT
A model is necessary to guide choices between programs seeking to improve the situation of families and those designed to create a setting which reduces migration. The selection of the levels to be included in the model will depend on identification of the level at which the contextual effect is expected to operate and their relevance to levels for which policies are specified. The intervening and interactive models represent distinctive ways that context influences individual behavior. The migration decision may be made solely by the family head or through some collective bargaining or negotiation process involving several family members. Changes in economic circumstances and alternatives are assumed to be continuously monitored, and whenever expected utilities from migration are positive, migration is expected to ensue. The decision of interest will be whether any member of the family adopts migration during the observation interval.
