The adolescent family environment and cohabitation across the transition to adulthood

This study draws upon a sample of men and women from Waves I and IV of Add Health to examine the linkages between the adolescent family environment and cohabitation behavior across the transition to adulthood. Using event history modeling the current paper considers the association between a variety of family factors and both the timing of first cohabiting unions and their outcomes (marriage, break up, still cohabiting). This paper also considers whether the impact of predictors for cohabitation timing and outcomes varies depending on the age of individuals. Results indicate that exposure during adolescence to family instability, parental cohabitation, lower parental SES, and low family belonging were associated with an elevated likelihood of entering into cohabiting unions, but primarily during adolescence and early adulthood. Family factors, including family belonging and parental relationship history, were also associated with the outcomes of first cohabitations.     

Family environments and the relationship context of first adolescent sex: Correlates of first sex in a casual versus steady relationship

Limited research has examined how family environments are associated with the relationship context of first sex, an important indicator of reproductive health risk. We use data from the 1997 National Longitudinal Survey of Youth to assess the association between the family environment - parent-parent relationships, parent-adolescent relationships, and family structure - and relationship context of first heterosexual sexual intercourse, distinguishing between the transition to first sex in serious and casual relationships. Twenty-five percent of females and 43% of males who had sex by age 18 did so in a casual relationship. All dimensions of the family environment were linked to the relationship context of first sex. Notably, higher parental monitoring was associated with a reduced risk of transitioning to first sex in a casual relationship versus no sex, and greater family routines were associated with a reduced risk of transitioning to sex in a steady relationship versus having no sex, for males and females. A strong maternal-adolescent relationship was associated with a reduced risk of first sex in a casual relationship but only for males. Additionally, in two-parent families, a strong father-adolescent relationship was associated with reduced risk of transitioning to casual sex, but only for females. Pregnancy and STI prevention programs should work with parents to foster positive parent-adolescent relationships, to become aware of their adolescents’ activities and to recognize that parents are important models for adolescent relationship behaviors.     

The Variable Effects of Family Background on the Timing of First Marriage: United States, 1969–1993

Longitudinal data from the Panel Study of Income Dynamics for a sample of 6570 women and men observed between 1969 and 1993 are used to examine historical changes and life-course variation in the effects of family background characteristics on the timing of first marriage. Discrete-time event history analyses reveal that the inverse effect of parental resources (family income and mother's education) on the timing of first marriage has both declined over time and weakens as children age. Historical declines in the effect of parental resources on first marriage timing appear to explain the divergence between Black and White marriage patterns over this period. In contrast, the inverse effect of experiencing a nonintact family structure during childhood on the timing of first marriage remains constant over both historical time and the life course. The implications of these findings for theories of demographic individuation and life-course perspectives are discussed.     

Does it matter how you ask? Question wording and males’ reporting of contraceptive use at last sex

This paper reports results from a unique experiment conducted in the 2002 National Survey of Family Growth (NSFG) to gauge the effect of question format on men’s reports of contraceptive use at last sexual intercourse. Respondents received separate questions about their own and their partners’ contraceptive use or one combined question about either partner’s contraceptive use. We examine whether receiving separate questions, as opposed to one combined question, is related to higher reports of using any contraceptive method, specific methods, female methods in addition to male methods, and the number of methods reported. We find that reports of any contraceptive use at last sex and use of the most common methods, condoms and the pill, were stable across question formats. However, we find significantly higher reports of withdrawal, combining male and female methods, and multiple method use among men who received the separate-question format. We also find that characteristics of the sexual experience in question condition the effect of question format on men’s reports.     

Life course transitions in early adulthood and SES disparities in tobacco use

A huge literature has documented adult socioeconomic disparities in smoking but says less about how these disparities emerge over the life course. Building on findings that smoking among adolescents differs only modestly by parental SES, we utilize a life course perspective on social differentiation to help explain the widening disparities in smoking in young adulthood. Our theory suggests that achieved socioeconomic status and the nature and timing of adult role transitions affect age-based trajectories of smoking and widen disparities in adult smoking. The analyses use data from the National Longitudinal Study of Adolescent Health, which follows a representative national sample over four waves from ages 11–17 in 1994/1995 to 26–34 in 2007/2008. The results show divergent age trajectories in smoking by parental education and that achieved socioeconomic status and life course roles in young adulthood account in good part for differences in the age trajectories. The findings demonstrate the value of the life course perspective in understanding processes of increasing stratification in health behavior and health during the transition to adulthood.     

周密的家世与交游对其笔记撰述之影响

周密是宋末元初的笔记撰述大家,他的笔记真实反映了当时社会各层面的生活,有着重要的文学、历史价值。周密的家学传统影响着其笔记撰述的原则和理念,父祖辈岁编日记的“家乘”、“日录”,为周密本人的笔记撰述提供了资料来源与撰述典范。而周密丰富的阅历和广泛的交游,对其笔记撰述的影响主要体现在学识养成和资料积累上。     

Breastfeeding,overweight status,and inflammation

Research documents a host of health benefits of breastfeeding for infants and children, including long-term health conditions arising from inflammation. Here, we provide new evidence about this association, focusing on the link between breastfeeding in infancy and inflammation in early adulthood. Our study is based on the National Longitudinal Study of Adolescent to Adult Health (Add Health) which allows us investigate a potentially important mediating pathway – overweight status from early adolescence into young adulthood. Results from pathway analyses in a structural equation modeling framework indicate that, in addition to a direct pathway linking breastfeeding and inflammation, an indirect pathway through overweight status across adolescence into young adulthood partially explains the association between breastfeeding and inflammation. Overweight status, moreover, links breastfeeding to inflammation not only through proximal timing of overweight status, but also through an indirect cascading process of overweight status over the life course that is evident in adolescence. Overall, this study highlights the importance of considering breastfeeding, overweight status and inflammation as dynamic life course processes that contribute to development of health inequalities.     

Everybody's Doin' It (Right?): Neighborhood Norms and Sexual Activity in Adolescence

A neighborhood’s normative climate is linked to, but conceptually distinct from, its structural characteristics such as poverty and racial/ethnic composition. Given the deleterious consequences of early sexual activity for adolescent health and well-being, it is important to assess normative influences on youth behaviors such as sexual debut, number of sex partners, and involvement in casual sexual experiences. The current study moves beyond prior research by constructing a measure of normative climate that more fully captures neighborhood norms, and analyzing the influence of normative climate on behavior in a longitudinal framework. Using recently geo-coded data from the Toledo Adolescent Relationships Study (TARS), we analyze the effect of normative climate on adolescents’ sexual behaviors. Results indicate that variation in neighborhood normative climates increases adolescents’ odds of sexual debut and casual sex, and is associated with their number of sex partners, even after accounting for neighborhood structural disadvantage and demographic risk factors.     

Childhood family structure and complexity in partnership life courses

This study investigated the associations between childhood living arrangements and complex adult partnership trajectories. The authors defined first union dissolution as the event initiating a complex partnership life course, and measured the level of complexity using a weighted cumulative index of subsequent partnership episodes. The analyses were based on a representative sample of the German population born in 1971–73 from the German Family Panel and used multivariate hurdle models to estimate the probability of experiencing the initiation of a complex partnership trajectory, as well as the level of complexity. Results showed that respondents who did not grow up with both biological parents (i.e. those who experienced an alternative family structure) had both a greater likelihood of experiencing the dissolution of their own first union, and followed more complex subsequent partnership trajectories. These associations varied across types of (alternative) family structures experienced during childhood and according to the level of parental partnership (in)stability. This study contributes to our understanding of contemporary partnership complexity and its precursors using a long term life course theoretical and methodological frame. We acknowledge that continuities and disruptions in the development of adult (complex) partnership trajectories can be linked to a growing diversity of family structure in childhood. Thereby, we expand knowledge on intergenerational interdependencies of family instability and complexity beyond the reproduction of the event of union dissolution.     

Long-term health and socioeconomic consequences of early-life exposure to the 1959–1961 Chinese Famine

This research investigates long-term consequences of early-life malnutrition by examining effects of the 1959–1961 Chinese Famine. Taking into account temporal and geographic variations in famine severity, we construct a difference-in-differences estimator to identify effects of early-life exposure to famine on perceived health and socioeconomic outcomes in midlife. Using a sample of 1716 adults born in 1955–1966 in rural China from a nationally representative survey—the 2005 Chinese General Social Survey—we find that the famine had adverse effects on mid-life health for males born into families where at least one parent was a Communist Party member and females regardless of parental party membership. Being born during the famine had no effects on years of education or income for either gender. Quantile regressions suggest intense mortality selection among males who had no party-affiliated parents. Our study highlights the importance of timing and contexts of life experiences in shaping health.     

Wages, earnings, and occupational status: did World War II veterans receive a premium?

Over 16 million men served during World War II (WWII), and we know that veterans obtained more education and earned higher incomes than did non-veterans and that these premiums were more substantial for Blacks and less educated men. However, we know very little about the reasons for such veteran premiums. Using several distinct, yet connected, theoretical traditions that have been used to link military service to subsequent outcomes—theories of the life course, the status attainment perspective, relatively new conceptualizations of social capital, economic theories of human capital, and theories of selectivity—we seek to redress this lack of understanding. We use survey data from the National Longitudinal Study of Mature Men (NLSMM) to examine the long-term effects of military service during WWII on occupational and income attainments. We find that the effects associated with being a veteran of WWII are modest and are mostly limited to less advantaged veterans, and can be largely explained by differences in human capital investment or selectivity. The one finding that cannot be explained by differences in family background, human capital investments, and selectivity is a higher hourly wage rate associated with being a Black veteran.     

Age at migration,family instability,and timing of sexual onset

This study builds on and extends previous research on nativity variations in adolescent health and risk behavior by addressing three questions: (1) whether and how generational status and age at migration are associated with timing of sexual onset among U.S. adolescents; (2) whether and how family instability mediates associations between nativity and sexual debut; and (3) whether and how these associations vary by gender. We find that first- and second-generation immigrant youth initiate sexual activity later than native youth. Foreign-born youth who migrate after the start of adolescence exhibit the latest sexual onset; boys’ sexual behavior is particularly sensitive to age at migration. Parental union stability is protective for first- and second-generation youth, especially boys; however, instability in co-residence with parents accelerates sexual debut for foreign-born girls, and dilutes protections from parental marital stability. Use of a non-English language at home delays sexual onset for immigrant girls, but not boys.     

The source of Black-White inequality in early language acquisition: Evidence from Early Head Start

I compare language learning trajectories for Black and White children over the first 3 years of life using data from the Early Head Start Research and Evaluation study (EHSRE) in order to determine the timing and source of divergence in early language skill. Results indicate that that while controlling for racial differences in family background and a measure of the home language environment cannot entirely account for disparities in language acquisition, interactions between age, race and maternal education, and between race and a time-varying measure of the home language environment play a significant role. I show that returns to parental education and the home language environment, in terms of language learning, are higher for White children than their Black peers. Specification checks confirm that these results are robust to alternate definitions of child language and the home language environment, and that no interactions between race, age and any of the other covariates are significant. I discuss possible explanations for these race specific education gradients, including measurement error and test bias. In addition, I address relevant empirical issues in estimating language growth with respect to linguistic inputs and the home language environment.     

Education and risky sex in Africa: Unraveling the link between women’s education and reproductive health behaviors in Kenya

Much research attention has been devoted to understanding the relationship between education and riskier sex-related behaviors and HIV/AIDS in sub-Saharan Africa. While in the early 1990s researchers found that increases in education were associated with a higher incidence of HIV/AIDS, this relationship appears to have reversed and better educated people, especially women, appear less likely to engage in riskier sex-related behaviors and have a lower incidence rate of HIV/AIDS. Our study begins to unravel the mechanisms that could explain why women’s educational attainment is associated with safer sex-related behaviors in sub-Saharan Africa. Using data from the 2003 Kenyan Demographic and Health Survey, we examine the potential mediating effects of HIV/AIDS knowledge, family planning discussions, gender empowerment, and husband’s education for explaining the relationship between education and age of first sex, casual sex, multiple sex partners, and condom use. We find that gender empowerment partially explains the relationship between education and age of first sex, and HIV/AIDS knowledge, husband’s education, and family planning discussions partially explain the relationship between education and condom use. We argue that gender inequality and lack of knowledge are likely to play a greater role in explaining the relationship between woman’s education and sex-related behaviors in sub-Saharan Africa than they do in more industrialized nations, where social capital explanations may have more explanatory power.     

网上性爱与网下的性实践之间的关系——全国14-61岁总人口随机抽样调查结果的实证

对于网上性爱,迄今为止仍然缺乏科学的实证研究。本研究基于2010年全国14-61岁总人口的随机抽样调查的数据,第一次在具有总体代表性的意义上,运用多元线性回归分析的方法分析了中国各个社会阶层参与网上性爱的不同程度,发现网上性爱其实是中上社会阶层的主流文化。本文进一步进行检验,发现在16种网下的非主流的性行为实践中,只有"上年中有过一夜情"这样一种情况与"网上性爱参与程度"呈现为显著的相关关系;从而证明了"网上黄毒"的假设不成立。     

Effects of relationship duration,cohabitation, and marriage on the frequency of intercourse in couples: Findings from German panel data

Research into the changes in the frequency of sexual intercourse is (with few exceptions) limited to cross-sectional analyses of marital duration. We investigate the frequency of intercourse while taking into account relationship duration as well as the duration of cohabitation and marriage, effects of parenthood, and relationship quality. For the analysis we apply fixed effects regression models using data from the German Family Panel (pairfam), a nationwide randomly sampled German panel survey. Our findings imply that the drop in sex frequency occurs early in the relationship, whereas neither cohabitation nor marriage affects the frequency of intercourse to a significant extent. Sex frequency is reduced during pregnancy and as long as the couple has small children, but becomes revived later on. Relationship quality is found to play a role as well. These results are contrary to the honeymoon effect found in earlier research, but indicate that in times of postponed marriage an analogous effect may be at work in the initial period of the relationship.     

Effects of family structure on the risk of first premarital birth in the presence of correlated unmeasured family effects

This paper assesses the effects of family structure on the risk of a first premarital birth for a sample of women from the 1979 National Longitudinal Survey of Youth. The sample reflects the family structure and family formation experiences of a cohort of women who were at risk of out-of-wedlock childbearing during the 1980s and early 1990s. We focus on assessing the effects of family structure in the presence of correlated unmeasured family effects, which are identified through the use of sibling data. The availability of multiple sibling respondents per family permits identification of family-level unobserved heterogeneity in a multi-level context of individuals nested within families. Our models account for family-specific sources of unobserved heterogeneity in the processes generating family structure and nonmarital childbearing, and provide estimates of the association between these sources of unobserved heterogeneity along with the effects of family structure and other covariates. We find that accounting for the correlation between unobserved family-level effects in processes generating family structure and first premarital birth leads to attenuated estimates of the effects family structure on the risk of first premarital birth. This suggests that other family-level factors may play a mediating role in generating both family structure and nonmarital childbearing.     

Extended household transitions, race/ethnicity, and early childhood cognitive outcomes

Beyond mothers’ union status transitions, other adults’ transitions into and out of the household contribute to family instability, particularly in early childhood. Using the Early Childhood Longitudinal Study-Birth Cohort (N ≅ 8550), this study examines associations between extended household transitions and age 2 cognitive development. A substantial minority of toddlers experiences these transitions, and their consequences vary by household member type, entry versus exit, and race/ethnicity. Extended household transitions predict lower cognitive scores for white children, but the selection of low-socioeconomic status families into extended households explains these disparities. Grandparent transitions predict significantly higher cognitive scores for African American and Latino children than whites, and some “other adult” transitions predict higher scores for Latinos than African Americans and whites. Extended household transitions’ consequences are independent of co-occurring residential moves and partner transitions. Findings suggest that studying extended household transitions is useful for understanding children’s early development, and their consequences vary by race/ethnicity.     

当代大学生婚恋观嬗变的原因探究

大学生的婚姻观已趋于多元化。当代大学生的婚恋观、择偶观以及性观念;当代大学生的生活态度及社会原因值得认真研究,并应引起足够的重视,以便更好地预测其将来的生活方式。     

How far do children move? Spatial distances after leaving the parental home

This research used geocoded data from 11 waves (2000-2010) of the German Socio-economic Panel Study to investigate the spatial distances of young adults’ initial move-outs (N = 2113) from their parents’ homes. Linear regression models predicted moving distances by factors at individual, family, household, and community level. Overall, home leavers moved across very small distances with a median value of less than 10 km. Greater distances were found for well-educated and childless home leavers who moved out at relatively young ages from high-income households located in less-urbanized regions. In line with developmental models of migration, young adults stayed closer if the parental household was still located at their place of childhood. We conclude that considering the spatial distance of move-outs may advance our understanding of individual passages to adulthood and intergenerational relations across the life course.