The Intra-household Division of Labor – An Empirical Analysis of Spousal Influences on Individual Time Allocation

Regarding total working hours, including both paid and unpaid labor, hardly any diff erences between German men and women exist. However, whereas men allocate most of their time to market work, women still do most of the non-market work. Using the German Time Use Surveys 1991/92 and 2001/02, this paper aims to analyze the interactions between the time use decisions of partners within one household. Thereby, an interdependent model of the partners’ times allocated to paid and unpaid work that allows for simultaneity and endogeneity of the time allocation decisions of the spouses is applied. The results suggest that male time in market and non-market work is unaff ected by their wife’s time use, while women adjust their time allocation to the time schedule of their partner. These fi ndings might partly explain why in Germany – and other European countries as well – gender diff erences in employment and wages still persist.Intra-household division of labor; time allocation; structural equation model

Getting What (Employers Think) You’re Worth – Evidence on the Gender Gap in Entry Wages among University Graduates

Since the early 1970s, wage differentials between men and women have attracted the research interest of labor economists. However, up to now empirical evidence on gender differentials of labor market entrants and the determinants of their starting wages is scarce. To fi ll this gap, we make use of a unique dataset on graduates in economics from a large representative German university, to investigate whether – even for such a homogeneous group of labor market entrants – a gender gap in earnings exists. Concentrating on a highly homogeneous sample limits the problem of unobserved heterogeneity, which results in an overestimation of the unexplained component of standard decompositions analyses. The results reveal that women’s entry wages are significant lower than those of their male counterparts. Blinder-Oaxaca decompositions suggest that the major part of this gap remains unexplained by gender differences in observable characteristics.Entry wage; gender wage gap; decomposition; university graduates

Women's Fertility and Employment Decisions under Two Political Systems - Comparing East and West Germany before Reunification

Over the last decades fertility rates have decreased in most developed countries, while female labour force participation has increased strongly over the same time period. To shed light on the relationship between women's fertility and employment decisions, we analyse their transitions to the first, second, and third child as well as their employment discontinuities following childbirth. Using new longitudinal datasets that cover the work and family life of women in the Federal Republic of Germany (FRG) and the German Democratic Republic (GDR) allows for taking into account two political regimes and drawing conclusions about the relevance of institutional factors for fertility and employment decisions. Our results suggest that in both parts of Germany women's probability of having a first child is negatively correlated with both employment and educational achievement. Regarding second and third birth risks, this negative correlation weakens. Analysing women's time spent out of the labour market following childbirth we find that in the East almost all mothers return to work within 18 months after birth. In the West, however, this proportion is much smaller and at the age when the child starts nursery school or school, women re-enter the labour market at higher rates. These results point to a strong influence of institutional circumstances, specifically the extent of public daycare provision. A multivariate analysis reveals a strong correlation between a woman's employment status prior to birth and her probability of re-entering the labour market afterwards.Female labour force participation, fertility

XUV lasing during strong-field assisted transient absorption in molecules

Using ab-initio non-Born-Oppenheimer simulations, we demonstrate amplification of XUV radiation in a high-harmonic generation type process using the example of the hydrogen molecular ion. A small fraction of the molecules is pumped to a dissociative Rydberg state from which IR-assisted XUV amplification is observed. We show that starting at sufficiently high IR driving field intensities the ground state molecules become quasi-transparent for XUV radiation, while due to stabilization gain from Rydberg states is maintained, thus leading to lasing from strongly driven Rydberg states. Further increase of the IR intensity even leads to gain by initially unexcited molecules, which are quickly excited by the driving IR pulse

Robust transverse structures in rescattered photoelectron wavepackets and their consequences

Initial-state symmetry has been under-appreciated in strong-field spectroscopies, where laser fields dominate the dynamics. We demonstrate numerically that the transverse photoelectron phase structure, arising from the initial-state symmetry, is robust in strong-field rescattering, and has pronounced effects on strong-field photoelectron spectra. Interpretation of rescattering experiments need to take these symmetry effects into account. In turn, robust transverse photoelectron phase structures may enable attosecond sub-Ångström super-resolution imaging with structured electron beams

Methods for Evaluating Educational Programs – Does Writing Center Participation Affect Student Achievement?

This paper evaluates the eff ectiveness of the introduction of a Writing Center at a university. The center has the purpose to provide subject-specifi c courses that aim to improve students‘ abilities of scientifi c writing. In order to deal with presumed selfperceptional biases of students in feedback surveys, we use diff erent quantitative evaluation methods and compare the results to corresponding qualitative student surveys. Based on this evaluation, we present and discuss the validity of the approaches to evaluate educational programs. Although almost all students reported the writing courses to be helpful, we fi nd no signifi cant eff ect of course participation on students‘ grades. We attribute the diff erence in the results between quantitative methods and qualitative surveys to the inappropriateness of student course evaluations for assessing the eff ectiveness of educational measures.Performance evaluation; educational programs; student evaluation; empirical methods

The Effect of Gender Equality on International Soccer Performance

In this article, we propose a new estimation strategy that draws on the variation in the performance between the male and the female national soccer team within a country to identify the effect of gender equality on women’s soccer success. For this, country year fixed effects are used to control for both time-constant and time-variant country specific factors. Our results reveal that within-country differences in our proxies for gender equality explain the international soccer performance of female teams, but have no notable explanatory power for the success of male teams. This suggests that gender equality is an important determinant of female sport success

X-ray imaging of chemically active valence electrons during a pericyclic reaction

Time-resolved imaging of chemically active valence electron densities is a long sought goal, as these electrons dictate the course of chemical reactions. However, x-ray scattering is always dominated by the core and inert valence electrons, making time-resolved x-ray imaging of chemically active valence electron densities extremely challenging. To image such electron densities, we demonstrate an effective and robust method, which emphasizes the information encoded in weakly scattered photons. The degenerate Cope rearrangement of semibullvalene, a pericyclic reaction, is used as an example to visually illustrate our approach. Our work also provides experimental access to the long-standing problem of synchronous versus asynchronous bond formation and breaking during pericyclic reactions.Comment: 19 pages, 3 figures, comments are most welcom