Haughton, D.; Haughton, J. - Groupe de Recherche en Économie Mathématique et … - 1996
Son preference is strong in Vietnam, according to attitudinal surveys and studies of contraceptive prevalence and birth hazards. These techniques assume a single model is valid for all families, but it is more plausible that son preference is found for some, but not all, families. Heterogeneous...