Personality trait similarity in recently cohabiting couples: Partner choice, convergence, or selective breakup?

Romantic partners tend to be more similar in self-reported personality traits than would be expected by chance. This similarity can be due to the choice of a similar partner, partners becoming more similar to each other over time, or dissimilar couples breaking up. To examine whether these processes (choice, convergence, or breakup) explain personality trait similarities in couples, we followed a sample of 1,180 German couples ( = 2,360 individuals; age range = 17-82 years old) from right after moving in together (ranging from 0 to 4 years after) up to 16 years thereafter.

Reassessing Chronic Strain: A Research Note on Women's Income Dynamics After Divorce and Separation.

The economic consequences of divorce and separation for women are commonly associated with the chronic strain model, according to which women's losses are large and persistent. This research note shifts the focus to a crisis model highlighting women's potential of, and routes to, recovery from initial losses. Drawing on German Socio-Economic Panel data (1984-2021) on women in marital and cohabiting unions (N ∼ 27,000 women, N ∼ 3,400 divorces and separations), we use fixed-effects regression models and event-history models to analyze changes in equivalized monthly household income and poverty risk across the process of divorce and separation.

Trends of Opioid Usage in Surgical Patients in a Small Community Hospital: Analysis of Patient Data Between 2017 and 2021.

The purpose of our study was to quantify and analyze the annual opioid usage in surgical patients at Wood County Hospital (WCH) between 2017 and 2021. : In this retrospective study, patient data between 2017 and 2021 was analyzed to determine the oral morphine milligram equivalent (MME) of opioids used in surgical patients at WCH. Annual MME prescribed per admission was compared each year using one-way ANOVA followed by Tukey post hoc test.

Achromatic, planar Fresnel-reflector for a single-beam magneto-optical trap.

We present a novel achromatic, planar, periodic mirror structure for single-beam magneto-optical trapping and demonstrate its use in the first- and second-stage cooling and trapping for different isotopes of strontium. We refer to it as a Fresnel magneto-optical trap (MOT) as the structure is inspired by Fresnel lenses. By design, it avoids many of the problems that arise for multi-color cooling using planar structures based on diffraction gratings, which have been the dominant planar structures to be used for single-beam trapping thus far.

An optical atomic clock based on a highly charged ion.

Optical atomic clocks are the most accurate measurement devices ever constructed and have found many applications in fundamental science and technology. The use of highly charged ions (HCI) as a new class of references for highest-accuracy clocks and precision tests of fundamental physics has long been motivated by their extreme atomic properties and reduced sensitivity to perturbations from external electric and magnetic fields compared with singly charged ions or neutral atoms. Here we present the realization of this new class of clocks, based on an optical magnetic-dipole transition in Ar.

A field ionizer for photodetachment studies of negative ions.

In this paper, we present an apparatus for studies into the photodetachment process of atomic negative ions. State-selective detection of the residual atom following the initial photodetachment step is achieved by combining resonant laser excitation of the photo-detached atom with electric field ionization. The resonance ionization technique in combination with a co-linear ion-laser beam geometry gives an experimental apparatus that has both high selectivity and sensitivity.

An ultralow-noise superconducting radio-frequency ion trap for frequency metrology with highly charged ions.

We present a novel ultrastable superconducting radio-frequency (RF) ion trap realized as a combination of an RF cavity and a linear Paul trap. Its RF quadrupole mode at 34.52 MHz reaches a quality factor of Q ≈ 2.

The Comparative Panel File: Harmonized Household Panel Surveys from Seven Countries.

The Comparative Panel File (CPF) harmonizes the world's largest and longest-running household panel surveys from seven countries: Australia (HILDA), Germany (SOEP), United Kingdom (BHPS and UKHLS), South Korea (KLIPS), Russia (RLMS), Switzerland (SHP), and the United States (PSID). The project aims to support the social science community in the analysis of comparative life course data. The CPF builds on the Cross-National Equivalent File but offers a larger range of variables, larger and more recent samples, an easier and more flexible workflow, and an open science platform for development.

Family size and economic wellbeing following divorce: The United States in comparative perspective.

Studies have documented the negative association between divorce and women's economic wellbeing in several countries. Less is known about whether the effects of divorce on women's economic wellbeing, and their persistency, vary by family size. We present the first comprehensive assessment of how the short-term and medium-term economic consequences of divorce vary by family size.

Sibling influence on family formation: A study of social interaction effects on fertility, marriage, and divorce.

This study examined social interaction effects on family formation and dissolution, asking whether fertility, marital, and divorce behavior spread in the sibling network. Using panel data from the German SOEP (1984 - 2016; N = 4,521 individuals), we estimated discrete-time event history models with random effects at the individual to examine whether siblings' transitions to parenthood, marriage, and divorce influence an individual's chance to have children, marry, and divorce. Results show that the hazard of becoming a parent increased in the short term after a sibling had a child.

Educational Reproduction in Germany: A Prospective Study Based on Retrospective Data.

This study examines educational reproduction of East and West German men and women born between 1930 and 1950. In a prospective design, we study the importance of mobility and fertility pathways of reproduction, considering not only the social reproduction of education as an attribute but also the demographic reproduction of individuals who carry this attribute. Using data from NEPS and SOEP, we introduce a method that estimates prospective models based on retrospective data commonly available in surveys.

Operating a cesium sputter source in a pulsed mode.

A scheme is presented for pulsing of a cesium sputter negative ion source by periodically switching on and off the high voltage driving the sputtering process. We demonstrate how the pulsed ion beam can be used in combination with a pulsed laser (6 ns pulse length) that has a 10 Hz repetition rate to study the photodetachment process, where a negative ion is neutralized due to the absorption of a photon. In such experiments, where the ion beam is used only for a small fraction of the time, we show that the pulsed mode operation can increase the lifetime of a cathode by two orders of magnitude as compared with DC operation.

Coherent laser spectroscopy of highly charged ions using quantum logic.

Precision spectroscopy of atomic systems is an invaluable tool for the study of fundamental interactions and symmetries. Recently, highly charged ions have been proposed to enable sensitive tests of physics beyond the standard model and the realization of high-accuracy atomic clocks, owing to their high sensitivity to fundamental physics and insensitivity to external perturbations, which result from the high binding energies of their outer electrons. However, the implementation of these ideas has been hindered by the low spectroscopic accuracies (of the order of parts per million) achieved so far.

Family, Firms, and Fertility: A Study of Social Interaction Effects.

Research has indicated that fertility spreads through social networks and attributed this phenomenon to social interaction effects. It remains unclear, however, whether the findings of previous studies reflect the direct influence of network partners or contextual and selection factors, such as shared environment and common background characteristics. The present study uses instrumental variables to improve the identification of social interaction effects on fertility.

Trajectories of life satisfaction before, upon, and after divorce: Evidence from a new matching approach.

The aim of the current study was to compare changes in divorcees' life satisfaction to changes in a control sample of nondivorcees. Prospective longitudinal data came from 33 waves of the German Socio-Economic Panel Study. Divorcees (n = 787) were propensity-score matched to nondivorcees (n = 1,629) in the year of marriage.

A cryogenic radio-frequency ion trap for quantum logic spectroscopy of highly charged ions.

A cryogenic radio-frequency ion trap system designed for quantum logic spectroscopy of highly charged ions (HCI) is presented. It includes a segmented linear Paul trap, an in-vacuum imaging lens, and a helical resonator. We demonstrate ground state cooling of all three modes of motion of a single Be ion and determine their heating rates as well as excess axial micromotion.

Closed-cycle, low-vibration 4 K cryostat for ion traps and other applications.

In vacuo cryogenic environments are ideal for applications requiring both low temperatures and extremely low particle densities. This enables reaching long storage and coherence times, for example, in ion traps, essential requirements for experiments with highly charged ions, quantum computation, and optical clocks. We have developed a novel cryostat continuously refrigerated with a pulse-tube cryocooler and providing the lowest vibration level reported for such a closed-cycle system with 1 W cooling power for a <5 K experiment.

Health and Housework in Later Life: A Longitudinal Study of Retired Couples.

Objectives: To examine how changes in wives' and husbands' health influenced housework time and domestic outsourcing in retired couples.

Method: We estimated fixed-effects models to test hypotheses about the gendered influence of health declines on absolute and relative measures of time spent on routine and nonroutine housework as well as the probability of outsourcing housework. The data were obtained from 23 waves of the German Socio-Economic Panel Study, comprising N = 25,119 annual observations of N = 3,889 retired couples aged 60-85 years.

Gender Differences in the Consequences of Divorce: A Study of Multiple Outcomes.

In this study, I examined gender differences in the consequences of divorce by tracing annual change in 20 outcome measures covering four domains: economic, housing and domestic, health and well-being, and social. I used data from the German Socio-Economic Panel Study (SOEP) and fixed-effects panel regression models on a sample of N = 18,030 individuals initially observed in a marital union, N = 1,220 of whom divorced across the observation period (1984-2015). Three main findings emerged from the analysis.

Family Structure and Early Home Leaving: A Mediation Analysis.

An ample body of research has shown that young adults from non-intact families are more likely to leave the parental home at an early age than young adults from intact families. However, little is known about the mechanisms underlying this relationship. We drew on prospective longitudinal data from the German Socio-Economic Panel Study (SOEP) to examine why young adults from non-intact families are more likely to leave home early.

Education and Health across Lives and Cohorts: A Study of Cumulative (Dis)advantage and Its Rising Importance in Germany.

Research from the United States has supported two hypotheses. First, educational gaps in health widen with age-the cumulative (dis)advantage hypothesis. Second, this relationship has intensified across cohorts-the rising importance hypothesis.

Do Immigrants Suffer More From Job Loss? Unemployment and Subjective Well-being in Germany.

This study asks whether immigrants suffer more from unemployment than German natives. Differences between these groups in pre-unemployment characteristics, the type of the transition into unemployment, and the consequences of this transition suggest that factors intensifying the negative impact of unemployment on subjective well-being are more concentrated in immigrants than in natives. Based on longitudinal data from the German Socio-Economic Panel Study (1990-2014; N = 34,767 persons aged 20 to 64; N = 210,930 person-years), we used fixed-effects models to trace within-person change in subjective well-being across the transition from employment into unemployment and over several years of continued unemployment.

Is Divorce More Painful When Couples Have Children? Evidence From Long-Term Panel Data on Multiple Domains of Well-being.

Theoretical models of the divorce process suggest that marital breakup is more painful in the presence of children, yet little is known about the role of children as a moderator of divorce effects on adult well-being. The present study addresses this gap of research based on long-term panel data from Germany (SOEP). Following individuals over several years before and after divorce, we investigated whether the impact of divorce on multiple measures of well-being varied by the presence and age of children before marital breakup.