Union Transitions Following the Birth of a Child to Cohabiting Parents

Despite a growing interest in the family trajectories of unmarried women, there has been limited research on union transitions among cohabiting parents. Using data from the 2002 National Survey of Family Growth, we examined how family complexity (including relationship and fertility histories), as well as characteristics of the union and birth, were associated with transitions to marriage or to separation among 1,105 women who had a birth in a cohabiting relationship. Cohabiting parents had complex relationship and fertility histories, which were tied to union transitions. Having a previous nonmarital birth was associated with a lower relative risk of marriage and a greater risk of separation. In contrast, a prior marriage or marital birth was linked to union stability (getting married or remaining cohabiting). Characteristics of the union and birth were also important. Important racial/ethnic differences emerged in the analyses. Black parents had the most complex family histories and the lowest relative risk of transitioning to marriage. Stable cohabitations were more common among Hispanic mothers, and measures of family complexity were particularly important to their relative risk of marriage. White mothers who began cohabiting after conception were the most likely to marry, suggesting that “shot-gun cohabitations” serve as a stepping-stone to marriage.     

Change and Continuity in the Formation of First Marital Unions in Australia

Marriage rates have now been falling in all Western countries for more than 20 years. Rising levels of women's education and employment, extra-marital cohabitation, and separation and divorce both preceded, and continue to accompany, this trend. We apply hazards models to a data-set rich in event-history information in order to study the links between these movements at the level of the individual in Australia. Contra the New Home Economists it transpires that longer education lowers women's propensity to marry, not by providing them with alternative careers to marriage, but by delaying their entry into the marriage market. Again, contra the New Home Economists, employment actually increases women's marriage probabilities. Cohabitation serves variously as an alternative and a prelude to formal marriage. Finally, in contrast with a study of marriage dissolution in Australia, the strengths of factors that variously inhibit or promote marriage, such as women's education and employment, have neither weakened nor strengthened during the recent past.     

Attitudes of welfare recipients toward marriage and childbearing

The 1996 Personal Responsibility and Work Opportunities Reconciliation Act (PRWORA) put the need for attitudinal change at the center of efforts to help welfare recipients become economically independent, avoid out-of-wedlock childbearing, and embrace marriage. In this paper, we focus specifically on attitudes, analyzing both differences in values and attitudes between welfare recipients and other women on the cusp of reform, as well as the effects of TANF reforms in two states on the attitudes and behaviors of women subject to the reforms. National data reveal few differences in values and attitudes between welfare recipients and other women once background characteristics are held constant. A majority of both groups believes that prospective parents should marry, but single parents can raise a child as well as married parents. Personal aspirations for marriage and further childbearing also are fairly similar. These similarities may be one reason that the literature has shown TANF to have limited effects on marriage and childbearing. A second set of analyses investigates the degree to which welfare recipients in Delaware and Indiana report that reforms affected their aspirations for marriage and childbearing. Self-reported impacts are greater for fertility than marriage attitudes. Even among those who report their attitudes were affected by reform, recipients appear to have difficulty acting on their marital and childbearing desires, dampening any effects on behavior. These findings reinforce the current sense among researchers and policy makers that more direct reforms are needed to have a substantial effect on marriage and out-of-wedlock childbearing.     

The relative stability of cohabiting and marital unions for children

Children are increasingly born into cohabiting parent families, but we know little to date about the implications of this family pattern for children's lives. We examine whether children born into premarital cohabitation and first marriages experience similar rates of parental disruption, and whether marriage among cohabiting parents enhances union stability. These issues are important because past research has linked instability in family structure with lower levels of child well-being. Drawing on the 1995 National Survey of Family Growth, we find that white, black and Hispanic children born to cohabiting parents experience greater levels of instability than children born to married parents. Moreover, black and Hispanic children whose cohabiting parents marry do not experience the same levels of family stability as those born to married parents; among white children, however, the marriage of cohabiting parents raises levels of family stability to that experienced by children born in marriage. The findings from this paper contribute to the debate about the benefits of marriage for children.     

Measurement and structural invariance of the US version of the Birth Satisfaction Scale-Revised (BSS-R) in a large sample

Background

The 10-item Birth Satisfaction Scale-Revised (BSS-R) is being increasingly used internationally. The use of the measure and the concept has gathered traction in the United States following the development of a US version of the tool. A limitation of previous studies of the measurement characteristics of the BSS-R is modest sample size. Unplanned pregnancy is recognised as being associated with a range of negative birth outcomes, but the relationship to birth satisfaction has received little attention, despite the importance of birth satisfaction to a range of postnatal outcomes.

Stability and Bifurcations in a Model of Bacteria Immunity with Quorum Sensing

Quorum sensing, a widespread phenomenon in bacteria that is used to coordinate gene expression among local populations, intervenes in the competition between bacteria and the immune system. The domain of attraction of the bacteria-free equilibrium results from a linear matrix inequality optimization with a multivariate polynomial objective under constraints. The Bogdanov-Takens singularity and bifurcation, including a saddle-node bifurcation, a Hopf bifurcation, and a homoclinic bifurcation, are obtained from normal form theory. The normal form of a bifurcation is a simple dynamical system which is equivalent to all systems exhibiting this bifurcation.     

论青年女性流动人口初育间隔与人口控制——来自厦门流动人口家庭问卷调查的启示

青年女性流动人口实际生育行为的控制对于人口规模与结构的控制,起着至关重要的作用。而生育时间的选择作为影响流动人口生育实践的一个重要因素,体现在对各孩次生育间隔的控制上。本文在描述分析的基础上,应用Cox比例风险模型,主要对厦门市青年女性流动人口初育间隔的影响因素进行估计和检验,并在总结分析的基础上对流动人口控制问题提出几点对策思考。     

Additional Work,Family Agriculture,and the Birth of a First or a Second Child in Russia at the Beginning of the 1990s

At the beginning of the transition period, many Russian households faced substantial economic hardships and uncertainties. An economic downturn had become one of the major factors responsible for the significant and rapid decline of Russian fertility. However, many households tried to cope with this situation by engaging in multiple income generating activities and the cultivation of food on private plots of land. The question therefore arises whether these activities had a positive impact on fertility decisions. This paper explores the association between additional employment or subsistence measures (second jobs, part-time self-employment, and part-time family agriculture) and the probability to have a first or a second child in Russia during 1990 and the spring of 1993. Data from 966 respondents from the Russian component of the survey Social Stratification in Eastern Europe after 1989: General Population Survey show that activities that generate an additional income were positively associated with the birth of a second child. This is especially the case if these activities produce half of a respondent's or her household's income. The birth of a second child was also positively associated with the fact that a household consumed food that was cultivated by the household itself. However, none of these activities was significantly connected with the birth of a first child.     

Stability Analysis and Dynamics Preserving Nonstandard Finite Difference Schemes for a Malaria Model

When both human and mosquito populations vary, forward bifurcation occurs if the basic reproduction number R ₀ is less than one in the absence of disease-induced death. When the disease-induced death rate is large enough, R ₀ = 1 is a subcritical backward bifurcation point. The domain for the study of the dynamics is reduced to a compact and feasible region, where the system admits a specific algebraic decomposition into infective and non-infected humans and mosquitoes. Stability results are extended and the possibility of backward bifurcation is clarified. A dynamically consistent nonstandard finite difference scheme is designed.     

Stability of environment and of insect populations

Summary The abundance of moths was monitored with light-traps in two sites in southern Bohemia, České Budějovice for 22 years and in Černiš for 9 years. In these sites, that are vastly different in environmental stability and predictability, stability of insect populations was studied. The amplitude of fluctuations in abundance of the insect populations, as measured by the coefficient of variation (CV), varied a great deal between species so that there was a large overlap between the two sites. Nevertheless there was a highly significant tendency for species at Černiš, the more stable site, to have smaller values of CV, i.e., to be less fluctuating. Also in species co-occurring in the two sites, the CV at Černiš tended to be smaller. Trends in abundance of individual species over time, both increases and decreases, were common in both sites and did not differ between habitats. Environmental stability begets insect population stability in terms of the amplitude of the fluctuations, but trends in time occur irrespective of stability of the habitat.     

我国生育政策对二孩生育间隔影响的分层模型研究

我国不同生育政策类型地区二孩生育间隔的差异,既受到地区经济、社会和生育政策的影响,又受到育龄妇女个人和家庭因素的影响。分层模型结果表明,地区间生育间隔差异占我国二孩生育间隔总差异的30．54％。我国生育政策对不同政策类型地区二孩生育间隔差异的影响程度基本在20％以下,不同地区经济和社会发展的不平等状况是导致地区间二孩生育间隔差异的主要原因。     

Mobility,Perceptions of Quality of Life and Neighbourhood Stability in Saskatoon

Why people move, their well-being or self-assessed quality of life and the impact that this has on the stability of neighbourhoods are linked in many ways. One of the expected outcomes related to the attachment to and meaning of place is the level of intra-urban mobility by individuals and families. Those who have negative or neutral feelings towards the place they reside are expected to experience a greater level of intra-urban mobility. The objective of this paper is to examine the relationship between residential mobility and perceived well-being or self-assessed quality of life in Saskatoon, Saskatchewan across three clusters of neighbourhoods representing different socio-economic status (SES) (low, middle and high). The paper begins with a review of the literature on residential mobility and highlights concepts such as the life-cycle, social cohesion and social isolation. It employs data from three sources: a telephone survey collected from residents in 2001, a series of face-to-face interviews and 2001 Census data. The data are analysed statistically using a mixed model approach. The results show that mobility is an important feature of Saskatoon, and that a significant difference exists in the length of residency among the three neighbourhood clusters. However, the analysis indicates that there is no relationship between residential mobility and well-being as measured by self-reported quality of life and health.     

Women,Marital Status,and Symptoms of Depression in a Midlife National Sample

ABSTRACT

Previous studies of the correlates of depression among women have not generally been based on adequate midlife samples or precision in the specification of marital status categories. The present analysis is designed to address these deficiencies and is based on data from the Health and Retirement Survey-Wave 1 (i.e., respondents 51 to 61 years old). Results indicate that married women are less likely to report symptoms of depression than their unmarried counterparts. The mental health benefits of marriage are greater for men than for women. Moreover, other variables, such as marital satisfaction, self-rated health, and employment status are more powerful predictors of emotional well-being in midlife than marital status per se. The quality of marriage affects depressive symptoms more strongly for women than men.     

Results of a Quality of Work Life Index in Spain. A Comparison of Survey Results and Aggregate Social Indicators

The European Union launched the Lisbon Strategy in 2000 with the aim of establishing itself as the world’s most powerful economy. The importance of job quality has returned to the top of the European employment and social policy agenda. As targets are set, significant progress has been made in the creation of indicators. In this study, we compute a composite index for quality of work life using the dimensional structure provided by the European Commission, and present our results for regions, sectors, professional categories and sizes of firm in Spain in the period 2001–2004. We find that better results are found in the more developed regions, in service sectors, in bigger firms and in jobs with more responsibility. Finally, we compare the results of the index with workers’ subjective perceptions of job satisfaction, measured by a quality of work life survey. The test results reveal a strong relationship between the two measurements.     

Birth of a very low birth weight preterm infant and the intention to breastfeed 'naturally'

An interpretive phenomenological study involving 17 Australian parents was undertaken to explore parents' experiences of breastfeeding very low birth weight (VLBW) preterm infants from birth to 12 months of age. Data were collected from 45 individual interviews held with both mothers and fathers, which were then transcribed verbatim and analysed using thematic analysis. From this study, the analysis identified the following themes: the intention to breastfeed naturally; breast milk as connection; the maternal role of breast milk producer; breastmilk as the object of attention; breastfeeding and parenting the hospitalised baby and the demise of breastfeeding. The discussion presented here presents the theme of the intention to breastfeed 'naturally'. This study found that all of the participant women decided to breastfeed well before the preterm birth, and despite the birth of a VLBW preterm infant continued to expect the breastfeeding experience to be normal regardless of the difference of the postpartum experience. It is without doubt that for these parents the pro-breastfeeding rhetoric is powerfully influential and thus successful in promoting breastfeeding. Furthermore, all participants expected breastfeeding to be 'natural' and satisfying. There is disparity between parents' expectations of breastfeeding 'naturally' and the commonplace reality of long-term breast expression and uncertain at-breast feeding outcomes. How the parents came to make the decision to breastfeed their unborn child -- including the situations and experiences that have influenced their decision making -- and how the preterm birth and the dominant cultures subsequently affected that decision will be discussed. The findings have implications for midwifery education and maternity care professionals who support parents making feeding decisions early in pregnancy and those striving to breastfeed preterm infants.     

西部少数民族人口政策的稳定、调整与法制化

西部少数民族人口的发展状况,直接关系到西部地区经济、社会的全面协调和可持续发展。本文就其人口政策的稳定、调整与法制化的战略途径,进行一定的可行性探讨。     

Shoot growth dynamics and size-dependent shoot fate of a clonal plant,Festuca rubra, in a mountain grassland

The relation of the within-season and between-season patterns of shoot growth were compared in a clonal grass with long-lived shoots,Festuca rubra, in a mown mountain grassland. The growth rate of shoot length from spring to summer in a year was almost constant for each shoot irrespective of spring shoot length each year. The annual shoot growth rate from spring to spring was negatively correlated with the shoot length in the first spring. Shoots of different length and age therefore tended to converge over time to a population of identical shoot size, suggesting an equalizing effect of growth pattern on size structure. Shoot size (shoot length and number of leaves) influenced the fates of shoots. Larger shoots showed an increased incidence of both flowering and formation of intravaginal daughter shoots and a decreased incidence of death in the subsequent time period. The fates of shoots were independent of their age. Although the negatively size-dependent springto-spring annual shoot growth rate acted to decrease shoot size variation, the remaining variation within the shoot population was still sufficient to generate different fates of shoots. These fates were not related to the previous life history of individual shoots. There was a significantly positive effect of the shoot size at initiation on its life expectancy. This was mainly attributable to the positively size-dependent survival rate of shoots in the early stage (<1 year old) of shoot life history. Later on (> 1 year old), shoot size had little effect on the survival rate of shoots. Once small young shoots have survived this early stage (< 1 year old) in life history, they can grow vigorously, little affected by competition regardless of shoot size, and converge to a stable size structure of shoots of similar size. Only shoot size in the early stage ( < 1 year old) of life history is important for the persistence of a shoot population.