title: [Shadow price and income concepts in the economic theory of fertility].
abstract: "This paper deals with endogenous shadow prices and therefore non-linear budget constraints with endogenous income.  In contrast to the quantity-quality-models in the economic theory of fertility, here, these main features result from assumptions concerning home production technology.  The distinction between observable and 'true' change in income is crucial.  Only the latter is relevant for microeconomic decision calculus.  The concept of superiority is related to true changes in income, in the case of children as well.  Nonetheless the presented model is able to explain negative observable income effects with respect to the number of children."  (SUMMARY IN ENG)
mesh_terms: D003710:Demography; D004467:Economics; D005298:Fertility; D007182:Income; D008962:Models, Theoretical; D011153:Population; D011157:Population Dynamics; D012106:Research; D012959:Socioeconomic Factors
keywords: Demographic Factors; Economic Factors; Fertility; Income; Models, Theoretical; Population; Population Dynamics; Research Methodology; Socioeconomic Factors; Theoretical Studies; World
vernacular_title: Zum Schattenpreis- und Einkommensbegriff in der okonomischen Theorie der Fertilitat.