The Paradox of Children and Life Satisfaction

Empirical analyses of the determinants of life satisfaction routinely include the number of children as one of the socio demographic controls, without explicitly considering that, for a given household income, more children imply a lower level of income per family member. The variable “number of children” then often attracts a negative or insignificant coefficient. Using data from the German Socio Economic Panel 1984–2007 we confirm that the sign of the coefficient for the variable “number of children in the household” is negative when introducing household income without correction for the number of members in a life satisfaction regression. On the contrary, when we equivalise income with the most commonly adopted equivalence scales, so eliminating the monetary cost of raising children, the impact of the variable is positive and significant when a high level of economies of scale is assumed. Our results however lead us to reject slope homogeneity as we find strong differences by gender and region. In particular, the positive effect of children on life satisfaction is stronger for males and East Germans. We interpret these subsample split results as driven by heterogeneous opportunity costs and cultural traits.     

Emotional Intelligence as a Protective Factor Against Psychological Maltreatment in Dating Couples According to Age

Abstract

Psychological violence during dating is a current phenomenon of universal proportions. Initiatives are urgently required to deal with this reality, initiatives focused on anticipating the potentially violent dynamics. Various works of research have confirmed that emotional intelligence can be a protecting factor against violence in relationships. This paper analyses the relation between the capacity to exercise behavior patterns of psychological maltreatment within dating couples and the subjects’ emotional competences, as well as its relation to the subjects’ age. 1080 students of the University of Extremadura (Spain) participated in the study, aged between 17 and 23?years or more. The results show the presence of all the behavior patterns of psychological maltreatment analyzed, especially among the students aged 17–18?years. Similarly, the existence of significant correlations between all the manifestations of psychological violence and the emotional competences studied are confirmed, with a great variability in the results depending on the subjects’ age. Future studies are suggested focusing on training in emotional self-management skills as a protective agent against psychological violence in dating couples and as a healthy marital mechanism with no age limit.     

Devolution in the U.S. Welfare Reform: Divergence and Degradation in State Benefits

The Journal of Economic Inequality - The passage of the Personal Responsibility and Work Opportunity Reconciliation Act (PRWORA) in 1996 devolved responsibility for the design of welfare programs...     

The maximum dispersion problem

In the maximum dispersion problem, a given set of objects has to be partitioned into a number of groups. Each object has a non-negative weight and each group has a target weight, which may be different for each group. In addition to meeting the target weight of each group, all objects assigned to the same group should be as dispersed as possible with respect to some distance measure between pairs of objects. Potential applications for this problem come from such diverse fields as the problem of creating study groups or the design of waste collection systems. We develop and compare two different (mixed-) integer linear programming formulations for the problem. We also study a specific relaxation that enables us to derive tight bounds that improve the effectiveness of the formulations. Thereby, we obtain an upper bound by finding in an auxiliary graph subsets of given size with minimal diameter. A lower bound is derived based on the relation of the optimal solution of the relaxation to the chromatic number of a series of auxiliary graphs. Finally, we propose an exact solution scheme for the maximum dispersion problem and present extensive computational experiments to assess its efficiency.     

The Gendered Relationship Between (Old and New Forms of) Employment Instability and Union Dissolution

Population Research and Policy Review - The present study contributes to a more comprehensive understanding of the relation between employment instability and union dissolution. To address the...     

Grandparenting and Childbearing in the Extended Family

The study analyzes the role of grandparents’ childcare provision on their adult children’s fertility behavior using data from the Survey of Health, Aging and Retirement in Europe (SHARE) for eleven European countries. An important innovation is that we take into account siblings’ fertility behavior and share of grandparents’ time in terms of childcare. We show that availability of grandparents plays an important role in individuals’ decision of having children. Being helped by grandparents increases the chance of childbearing when existing grandchildren are not too young. On the other hand, the probability of having a child is lower when grandparents are already looking after a sibling’s young child. The role of grandparenting appears stronger in the South of Europe, where public childcare for young children is less prevalent.     

Risk-Based Design of Aseptic Processing of Heterogeneous Food Products

A risk assessment was performed to incorporate uncertainty in food processing conditions to develop a risk-based sterilization process design. The focus of this analysis was uncertainty associated with heterogeneous food products. Quartered button mushrooms were the chosen food product because it represents the most typical type. A model for sterilization of spherical particles was utilized, and each parameter's uncertainty was characterized for use under Monte Carlo simulation. Various particle distributions and fluid types were compared. The output of the model was the required sterilization time to achieve the target sterilization conditions with 95% probability. This value was then used to determine the mean fluid velocity for a given tube length. Finally, the output from the model was analyzed to determine the confidence in output based on uncertainty in the input parameters. The model was more sensitive to variation in particle size distribution than fluid type for power-law fluids. The 90% confidence interval included a holding time range of 1 min. With a 95% confidence level that only 8% of the data will be below the target sterilization conditions, a maximum of 9% of the data were expected to achieve double the target level. The results of such an analysis would be useful for management decisions concerning the design of aseptic food processing operations.