Are children driving the gender wage gap? Comparative evidence from Poland and Hungary

We examine how much children and responsibilities related with them contribute towards the divergence of mens and womens wages, and consequently, to the formation of the gender wage gap. To derive the relative contribution of gender specific wage inequalities caused by the parenthood to the overall gender wage gap, we provide a modification of standard Oaxaca-Blinder decomposition method, and correct simultaneously for selection into work and parenthood. Contrary to our expectations, the findings show that most of the gender wage inequality is due to the positive wage gap between men who do and do not have children and not due to the wage penalty incurred by mothers

Gender differentiation in intergenerational care-giving and migration choices

We weave together care-giving, gender, and migration. We hypothesize that daughters who are mothers have a stronger incentive than sons who are fathers to demonstrate to their children the appropriate way of caring for one’s parents. The reason underlying this hypothesis is that women on average live longer than men, they tend to marry men who are older than they are and, thus, they are more likely than men to spend their last years without a spouse. Because it is more effective and less costly to care for parents if they live nearby, daughters with children do not move as far away from the parental home as sons with children or childless offspring. Data on the distance between the children’s location and the parents’ location extracted from the Survey of Health, Ageing and Retirement in Europe (SHARE), in conjunction with data on selected demographic characteristics and institutional indicators taken from Eurostat, the OECD, and the World Bank, lend support to our hypothesis: compared to childless daughters, childless sons, and sons who are fathers, daughters who are mothers choose to live closer to their parents’ home

Sample preparation using liquid membrane extraction techniques

A brief review is given of membrane extraction techniques that are seen as suitable for the extraction of various chemicals in water samples. Membrane-based extraction methods have now gained popularity as methods of choice in the extraction of both ionisable and non-ionisable molecules from different samples. The main attractive features for these techniques include the use of minimal organic solvents, high selectivity and clean-up efficiency, with high enrichment factors. In most cases the overall cost involved is low due to the simplicity of the techniques which normally involve relatively fewer steps and handling procedures as compared to many other sample-preparation techniques. The various forms and the configurations of membrane-based techniques are another attractive feature which allows the possibility of hyphenation with separation instruments such as gas/liquid chromatographs and even capillary electrophoresis.Keywords: liquid membrane extraction techniques, sample preparation, water monitoring, organic and inorganic compound

The impact of parenthood on the gender wage gap – a comparative analysis of 26 European countries

We use cross-national data on 26 EU countries to assess how much children and the responsibilities related to them contribute to the gender wage gap, and how institutional elements - especially family policies - affect this relationship. Our analysis is based on a decomposition that reveals what portion of the gender wage gap may be attributed to: (1) the motherhood wage penalty, (2) the fatherhood wage premium, and (3) the gender wage gap among childless individuals. Our findings suggest that the variability in the magnitude of the gaps is closely related to the institutional context, pointing to different reasons behind the gender wage gap and policy implications. Southern EU countries have low gender wage gaps and low motherhood penalties or even premiums. Short leaves, low childcare coverage, and traditional norms do not support maternal labor supply, but mothers who work do not face a wage penalty. Western EU countries with higher childcare coverage, moderate length leaves, supportive norms, and flexible jobs have relatively high maternal employment and mothers are not faced with significant wage penalties. The highest motherhood penalties are found in CEE countries, where long leaves, low childcare availability under age 3, and preferences for within-family care lead to long absences from the labor market. In all countries, irrespective of cultural norms and policies, we find high positive family gaps among men, which drive men's average wages up, and lead to gender wage inequality

The sex preference for children in Europe: Children's sex and the probability and timing of births

Background: The preference for having children of a particular sex may be reflected in fertility behavior. For example, parents who want to have a son may be more likely to have another child if their firstborn child is female or if they have two female children. They may also speed up the conception, resulting in a faster progression to the next child. Objective: We examine whether there is a sex preference for children in Europe, which is reflected in an increased/decreased probability of having another child and a shorter/longer time to the next birth given the sex of existing children. We distinguish between progression to the second and the third child and different cohorts. Methods: We model the impact of children's sex on fertility using event history analysis. We apply mixture cure models, which allow us to distinguish between the probability of experiencing the event of interest and its timing. Results: We find evidence of the preference for having a girl, reflected in an increased probability of not having a second child if the first child is female. We also find that women who have two children of the same sex are more likely to give birth to a third child. Contribution: We contribute to research on the sex preference for children by (1) providing a comprehensive analysis of a number of European countries using consistent data and methodology, (2) examining the progression to the second and the third child, (3) distinguishing between different cohorts of women, and (4) applying mixture cure models

An ion-imprinted polymer for the selective extraction of mercury(II) ions in aqueous media

A double-imprinted polymer exhibiting high sensitivity for mercury(II) in aqueous solution is presented. Polymer particles imprinted with mercury(II) were synthesised by copolymerising the functional and cross-linking monomers, N’–[3– (Trimethoxysilyl)–propyl]diethylenetriamine (TPET) and tetraethylorthosilicate (TEOS). A double-imprinting procedure employing hexadecyltrimethylammonium bromide (CTAB), as a second template to improve the efficiency of the polymer, was adopted. The imprinted polymer was characterised by FTIR, scanning electron microscopy (SEM) and the average size determined by screen analysis using standard test sieves. Relative selective coefficients (k`) of the imprinted polymer evaluated from selective binding studies between Hg2+ and Cu2+ or Hg2+ and Cd2+ were 10 588 and 3 147, respectively. These values indicated highly-favoured Hg2+ extractions over the 2 competing ions. The results of spiked and real water samples showed high extraction efficiencies of Hg2+ ions, (over 84%) as evaluated from the detected unextracted Hg2+ ions by ICP-OES. The method exhibited a dynamic response concentration range for Hg2+ between 0.01 and 20 μg/mℓ, with a detection limit (LOD, 3σ) of 0.000036 μg/mℓ (36 ng/ℓ) that meets the monitoring requirements for the USA EPA of 2 000 ng/ℓ for Hg2+ in drinking water. Generally, the data (n=10) had percentage relative standard deviations (%RSD) of less than 4%. Satisfactory results were also obtained when the prepared sorbent was applied for the pre-concentration of Hg2+ from an aqueous certified reference material. These findings indicate that the double-imprinted polymer has potential to be used as an efficient extraction material for the selective pre–concentration of mercury(II) ions in aqueous environments

One Size Fits All? Gender Differences in the Effect of Subjective Feedback

The effect of objective feedback on performance is often studied, while subjective feedback is largely neglected in the economics literature. We estimate the impact of positive subjective feedback - encouragement and praise - on effort and performance, and compare the effect by gender. We use a computer game, during which players are randomly chosen to be given either no feedback (control) or positive subjective feedback (treatment), and analyze the treatment effect on effort (clicks) and performance (score). Based on previous economic and psychology theories, we test the pathways through which subjective feedback can have an impact: on (1) effort, due to the updating of expected performance or direct (dis)utility from the feedback, or (2) marginal productivity. The results point to significant differences in the mean effects of subjective feedback by gender. For women, encouragement has a significant positive effect while praise has a significant negative effect on performance, while men are less responsive to subjective feedback in general. Gender differences are mostly explained by different confidence distributions, while there are no gender differences in treatment effects if confidence level is held fixed. The effects are mostly realized through changes in effort. These results suggest that better targeted supervisory communication in schools or workplaces can improve the performance of lower-confidence individuals and thereby decrease the gender gap in performance