An international analysis of the effects of family allowance programs on fertility levels.
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"A tax-transfer system deals with redistribution a PAYGmong generations and corrective taxation a PAYGt the same time. Since such a policy is a government's task, we take a normative approach and pose the question: Which tax-transfer system should a government apply to maximize social welfare? The framework we consider allows for endogenous demographic aspects...: first, fertility has a great impact on a PAYG [pay-as-you-go] financed pension insurance; and second, through education human capital is accumulated.... We analyzed the optimal extent of a public pension scheme in the presence of external effects of fertility and education on the net domestic product." Pension schemes in Germany and the United States are compared.
"We suppose that women (couples), who are less than 40 years old, are faced with three types of sequential decisions: the fertility decision, the decision relative to the number of children to have and the decision concerning labour force participation.... We use a nested polychotomous discrete choice model to estimate the responsiveness of the behaviour of 'married' women in Quebec to variations in the expected flow of revenue resulting from changes in the parameters of the personal income tax and in the level of public monetary transfers conditional on the number of children. The model is estimated with micro-data from 9 repeated cross-sections for the years 1975 to 1987 with a full information maximum likelihood method.... This empirical setting is used to simulate the effects of changes made to the fiscal and transfer policies in favor of families with dependent children on fertility, [women's] labor force participation and the importance of spending costs for the two levels of government." (SUMMARY IN ENG)
As of May 1988, the Government of Quebec introduced a lump sum birth grant of $500 to assist families on the occasion of the birth of a child or of the adoption of a first or second child. When there are three or more children in the family, the grant is increased to $375 per quarter until the child reaches the age of two. In addition, as of January 1989, a young children's allowance was introduced for families with at least one child under the age of six. The allowance replaces the previous "availability allowance," but provides a higher level of benefit.
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In this paper, we propose a new Bayesian method for QTL analysis in outbred F2 families based on Markov chain Monte Carlo (MCMC) estimation allowing inference about whether each of F0 founders (grandparents) is homozygous or heterozygous at QTL. This, in turn, allows us to select a model accurately explaining observations of phenotypes for F2 individuals. The proposed method performs the fitting a statistical model of the two possible QTL states in each F0 grandparent, that is, homozygous and heterozygous at QTL, and gives a posterior distribution for the QTL states in each F0 grandparent. We confine ourselves to the discrimination of two QTL states, homozygous or heterozygous, for each of the F0 grandparents without taking into consideration whether common alleles are shared by F0 grandparents. The statistical model includes allelic effects and dominance effects for each QTL. The number of parameters representing allelic effects and dominance effects is therefore changed depending on the QTL states. A Reversible Jump MCMC technique is used for transition between the models of different dimensions. The effectiveness of the proposed method was investigated using simulation experiments. It was practicable to estimate the QTL states of F0 grandparents as well as the number, the locations and the effects of QTL segregating in an outbred F2 family.
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The mild autosomal recessive limb-girdle muscular dystrophies (LGMD) are a heterogeneous group of muscle diseases. The first gene to be mapped and associated with this phenotype was a locus on 15q based on linkage analysis in families from a French geographic isolate. These results have been confirmed in other populations, but it was shown that there is genetic heterogeneity for this form of LGMD. Recently, a second locus has been mapped to chromosome 2p. The confirmation of the mapping of this second locus in LGMD families from different populations is of utmost importance for the positional cloning of this gene (HGMW-approved symbol LGMD2B). In this publication, haplotypes generated from five chromosome 2 markers from all of the known large families linked to chromosome 2p are reported together with the recombinants that show the current most likely location of the LGMD 2B gene.