The Meaning of Gender While Aging With Paralytic Polio

The purpose of this article is to report the influence of gender on aging with childhood onset paralytic polio. The hermeneutic phenomenological exploration of gender was done using multiple qualitative interviews with 25 women, age 55 to 75 years of age, who had polio since before 14 years of age. We noted three themes: (a) the movement of her body, (b) integrating body and gender, and (c) gender discrepancies. Findings are discussed in the context of gendered expectations and the women's bodies.     

Premium differentiation in the Unemployment Insurance system and the demand for labor

We simulate the effect of the introduction of premium differentiation (experience rating) in the Dutch Unemployment Insurance system on the demand for labor for a variety of sectors in the Dutch economy. For the simulations we use the Bentolila and Bertola (1990) framework as a point of departure. In the simulations, the introduction of experience rating is modeled as expenditure neutral: in the absence of premium differentiation the cost of financing UI is modeled as a wage tax (independent of the number of workers fired by the firm), whereas in the presence of experience rating this cost is attributed to firing cost (affected by the firing action). Thus, the introduction of experience rating results in a shift from wage cost to firing cost. Following the political debate on the issue in the Netherlands, we assume that the introduction of experience rating does neither lead to a change in tax rates paid by workers nor to a change in eligibility rules or replacement rates of benefit claimants. Specific attention is paid to the distinction between young and old workers . In the model, labor adjustment costs (hiring and firing costs) are linear. The model allows for uncertainty in the business cycle.All correspondence to Hans Bloemen. Responsible editor: Alessandro Cigno     

Comparison of household-survey estimates with projections of mortality and orphan numbers in sub-Saharan Africa in the era of HIV/AIDS

The United Nations publishes estimates of HIV prevalence, AIDS mortality, and orphan numbers for all countries of the world. It is important to assess the validity of these model-based estimates since they underpin much policy concerned with care and prevention. Household surveys that ask questions about the survival of children's parents (orphanhood) offer an independent source of data with which these estimates can be compared. Survey estimates of maternal and paternal orphans are significantly lower than model estimates for 40 surveys in 36 countries of sub-Saharan Africa (p < 0.001, p = 0.002). This is probably because adult mortality from causes other than AIDS is lower than assumed in the models, although under-reporting of orphanhood in surveys may also play a role. Reducing adult mortality from causes other than AIDS brings the model estimates into close agreement with the surveys. This suggests that the fraction of orphans attributable to AIDS is greater than estimated previously.     

Coparenting and Relationship Quality Effects on Father Engagement: Variations by Residence,Romance

We focused on coparenting support, partner relationship quality, and father engagement in families with young children that did not change structurally over 4 years of participation in the Fragile Families and Child Wellbeing study (N = 1,756). There was a significantly stronger and more robust positive association between fathers' perceived coparenting support at age 1 and father engagement at age 3 among nonresidential nonromantic parents compared with residential (married or cohabiting) and nonresidential romantic parents. There was a significantly stronger and positive association between relationship quality at age 1 and father engagement at age 3 among nonresidential nonromantic parents compared with residential parents. The findings emphasize the importance of considering both family structure and romantic involvement contexts of fathering when tracking father engagement over time.     

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Learning-project structures in different work types: an empirical analysis

This study demonstrates that work-related learning projects can be organized using different structural arrangements. Sixteen learning projects conducted by ninety-six participants in three different work types were analysed and compared both qualitatively and quantitatively. No evidence was found for the claim that learning-project structures necessarily depend on the type of work in which they are carried out. However, two distinct combinations of learning project structure and work type did not emerge. It is concluded that actors have organizational choice in organizing learning projects, but their options are less likely to be realized if the learning-project type is very different from the worktype.     

On Bayesian learning from Bernoulli observations

We provide a reason for Bayesian updating, in the Bernoulli case, even when it is assumed that observations are independent and identically distributed with a fixed but unknown parameter _θ0${\theta }_0$. The motivation relies on the use of loss functions and asymptotics. Such a justification is important due to the recent interest and focus on Bayesian consistency which indeed assumes that the observations are independent and identically distributed rather than being conditionally independent with joint distribution depending on the choice of prior.