The extent to which people hold stable ideas and attitudes throughout their lives is a persistent concern among scholars across social science disciplines. Developmental processes early in life are widely considered to lay the groundwork for future attitudes, well-being, behavioral adaptation, and attainment. However, little is known about whether central components of the self-concept manifest persistent change, or simply short-term fluctuations around a stable baseline, through stages of the life course, including the lengthening transition to adulthood. The present study examines key self-related orientations as participants in the Youth Development Study moved from adolescence to mid-life over a 30-year period. Applying analytic methods recently employed by Lersch (2023) to study adult civic and political attitudes, we find evidence that more persistent change in self-orientations occurs during adolescence and the transition to adulthood; greater stability is manifest once adulthood has become established and continues until mid-life.

A large body of research investigates the dynamics of racial segregation in schools and neighborhoods, typically treating them as separate contexts. These studies offer insight into local patterns of demographic change but rarely consider how neighborhoods and schools evolve together. Yet, in the United States, the two are structurally intertwined: Residence-based school assignment policies mean that choosing where to live is often a choice about children's schools. We develop a framework for studying coupled changes in neighborhoods and schools that articulates how choices and opportunities in both domains imply different degrees of linkage. From this, we derive a model of coupled tipping that generates testable predictions about how demographic change begins and how neighborhood and school composition relate over time. We evaluate these predictions using original longitudinal data from 14 large US school districts from 1990-2010. Our findings support our model and deepen understanding of segregation dynamics in urban areas.

This sequential mixed-methods study examines how Americans ascribe meanings to the concepts racism, sexism, and classism. We first conduct interviews (N = 40) using a symbolic boundaries elicitation approach, gathering examples of scenarios that do and do not "count" as racism, sexism, and classism. We then use these examples as vignettes in a nationally representative survey experiment (N = 2,000). Results reveal striking evidence for cultural heterogeneity in how Americans understand and define racism, sexism, and classism. We find that a person's definition of these concepts depends on their emphasis on intentionality, unequal treatment/outcomes, and power (a)symmetry. We also find that political partisanship, gender, age, and income shape the importance of these three components in their definitions. Finally, we show that Americans' definitions of racism, sexism, and classism strongly predict their discrimination-related public opinion and policy preferences, such as support for affirmative action and antidiscrimination laws, even after accounting for demographic controls, including political views.

Sociologists understand that seemingly innate characteristics like race and gender are social constructs, yet a similar appreciation of age has failed to take hold. Using ethnographic, interview, and population-based survey experiment data, we interrogate the child/adult binary in the context of healthcare to illuminate processes through which age categories are essentialized and legitimated and thereby how age is socially constructed. People use hyperbolic language to position children as wholly innocent and limitlessly deserving and adults as agentic, responsible, and less deserving of healthcare resources. Individuals "do" age strategically to obtain resources, and institutions formalize the child/adult binary through arbitrary and sometimes contradictory criteria. Our quantitative data further find age to have outsized effects on perceptions of deservedness and responsibility compared with other categories of social differentiation.

Although studies observe heterogeneity in the effects of adolescent childbearing on schooling, little is currently known about when this pattern emerged or how it changed across cohorts of women who lived in distinct periods of US history. This article identifies the potential origins of effect heterogeneity in the educational costs of adolescent childbearing and extends recent advances in causal inference to detect group differences in heterogeneity. The analysis applies this approach to four cohorts of women from the National Longitudinal Surveys (NLS) who entered adolescence before, during, and after expansive economic, demographic, and cultural change in the twentieth century. Results suggest that the educational costs of adolescent childbearing, as well as heterogeneity in those costs, increased for women in the latter half of the twentieth century, especially for millennial women born 1980-84. The authors conclude that midcentury social changes fundamentally altered the educational costs of adolescent childbearing for women.

Research in the intergenerational transmission of socioeconomic status (SES) consistently shows that the SES of one generation benefits the next. Demographic processes shape the kin structures that serve as conduits for the transmission of SES. Few studies have examined these trends together to describe experiences in evolving kin structures throughout the life course and across generations. This article applies demographic techniques to fertility, marital, and mortality data from three generations in the Panel Survey of Income Dynamics to simulate the amount of time young adults would spend within consequential kin structures. High-SES adults spend more years of their young adulthood in advantageous kin structures with greater potential for kin support and capital accumulation, while low-SES adults spend a larger portion of their young adulthoods as single parents, sandwiched between widowed parents and children, and as adult orphans. The kin network inequities have grown since the 1980s, driven by lagging mortality improvements and increasing single parenthood among low-SES families.

This paper examines causal sibling spillover effects among students from different family backgrounds in elementary and middle school. Family backgrounds are captured by race, household structure, mothers' educational attainment, and school poverty. Exploiting discontinuities in school starting age created by North Carolina school-entry laws, we adopt a quasi-experimental approach and compare test scores of public school students whose older siblings were born shortly before and after the school-entry cutoff date. We find that individuals whose older siblings were born shortly after the school-entry cutoff date have significantly higher test scores in middle school, and that this positive spillover effect is particularly strong in disadvantaged families. We estimate that the spillover effect accounts for approximately one third of observed statistical associations in test scores between siblings, and the magnitude is much larger for disadvantaged families. Our results suggest that spillover effects from older to younger siblings may lead to greater divergence in academic outcomes and economic inequality between families.

We merge information on the date and location of homicides in Flint, MI with georeferenced weekly panel data from the Relationship Dynamics and Social Life study to assess how and why nearby homicides immediately impact young women's risk of pregnancy. Women's probability of conceiving a pregnancy increased in weeks when homicides occurred within .25 miles of their homes relative to in other weeks. This increase in pregnancy risk reflected decreases in contraceptive use, especially of short-acting hormonal methods. Contraceptive changes, however, were not accompanied by immediate changes in feelings about pregnancy or contraception, nor by immediate changes in contraceptive access or forgetfulness. Rather, in weeks when nearby homicides occurred, women were less likely to use contraception "just because," suggesting a marked decline in their reproductive vigilance. Although the small sample causes uncertainty about the magnitude of these differences, when they culminate in pregnancy, the immediate consequences of nearby homicides can have lifelong ramifications for young adults.

The equity-efficiency trade-off and cumulative return theories predict larger returns to school spending in areas with higher previous investment in children. Equity-not efficiency-is therefore used to justify progressive school funding: spending more in communities with fewer financial resources. Yet it remains unclear how returns to school spending vary across areas by previous investment. Using county-level panel data for 2009-18 from the Stanford Education Data Archive, the Census Finance Survey, and National Vital Statistics, the authors estimate achievement returns to school spending and test whether returns vary between counties with low and high levels of initial human capital (measured as birth weight), child poverty, and previous spending. Spending returns are higher among counties with low previous investment (counties that also have a high percentage of Black students). Evidence of diminishing returns by previous investment documents another way that schools increase equality and establishes another argument for progressive school funding: efficiency.

Despite research linking time-related work demands to gender inequality, the literature lacks a comprehensive analysis of wage premiums and penalties associated with differing temporal demands. Using longitudinal data and fixed-effects models that address unobserved heterogeneity among workers, we examine how various temporal constraints imposed by occupations are associated with pay. Unlike prior studies, our analysis separates an individual's working hours from an occupation's expected work time. We find pay premiums attached to the requirements for long hours and meeting frequent deadlines, but we find wage penalties for occupations that require much temporal coordination and allow little work-structuring discretion. Schedule irregularity is linked to lower pay for women but higher pay for men. Thus, differing remuneration logics appear to apply to different time-related occupational demands. The analysis also indicates that the premium for the occupation's work-time expectation is lower for women, particularly professional and managerial women, even after considering their actual working hours. We suggest that employers' suspicion of women's ability to comply with their occupation's work-time norm, which is likely more pronounced for professional and managerial women, might contribute to these results.

Foundational urban social theories view heterogeneity of exposure to spatial and social contexts as essential aspects of the urban experience. In contrast, contemporary neighborhood research emphasizes the isolation of city dwellers - particularly residents of racially segregated neighborhoods. Using geospatial data on a sample of youth from the 2014-16 Columbus, OH-based Adolescent Health and Development in Context study, we explore the extent to which the neighborhood locations of everyday activities vary with respect to residential racial composition. In the context of segregated US metro areas, the geographic isolation approach expects home census tract racial composition to powerfully shape the racial composition of activity location neighborhoods. In this view, Black youth residing in high proportion Black neighborhoods are expected to spend the vast majority of their time exposed to similarly Black-concentrated neighborhoods. Consistent with an alternative compelled mobility approach, we find that Black youth residing in high proportion Black neighborhoods exhibit among the highest levels of heterogeneity in the racial composition of neighborhoods encountered. Moreover, Black youth residing in high proportion Black neighborhoods are expected to spend 39% of their non-home time (roughly 2.5 hours a day) in low proportion Black neighborhoods compared to 23% (1.5 hours) in high proportion Black neighborhoods. Exposures to low proportion Black neighborhoods among these youth are largely driven by organizationally-based resource seeking. These findings call into question the assumption that residence in Black segregated neighborhoods leads to homogeneously Black segregated neighborhood exposures and encourage theoretical development and data collection strategies that acknowledge the potential for significant heterogeneity in the everyday neighborhood experiences of urban youth.

Why do some people adapt successfully to change while others do not? We examine this question in the context of a severe HIV/AIDS epidemic in South Africa, where adapting (or not) to social change has borne life and death consequences. Applying an age-period-cohort lens to the analysis of qualitative life history interviews among middle-aged and older adults, we consider the role of the life course and gendered sexuality in informing Africans' strategies of action, or inaction, and in differentially driving and stalling change in each cohort in response to the HIV/AIDS epidemic. Our study illuminates the unique challenges of adapting to social change that result from dynamic interactions among aging, prevailing social structures, and a cohort's socio-historical orientation to a new period.

Using a probability-based sample from 39 U.S. states from a general health survey, the author evaluates popular claims of a "transgender tipping point" by estimating probabilities of identifying as transgender and gender nonconforming among cohorts of respondents born between 1935 and 2001. Respondents born after 1984 are significantly more likely to identify as transgender or gender nonconforming than respondents in earlier cohorts. However, cohort changes in identification as transgender and gender nonconforming vary along lines of sex assigned at birth, race/ethnicity, and college attendance. Within different cohorts, these factors have different associations with higher or lower odds of identifying as transgender or gender nonconforming, sometimes contrasting with popular narratives and media representation patterns. Analyzed in context, these findings provide empirical evidence that several distinct population-level biographical availability patterns, including convergences, reversals, and persistence of demographic associations, have shaped the prevalence and composition of U.S. transgender and gender nonconforming populations over time.

The United States is currently in the midst of a long, historic cultural transformation-redefining our collective representation to be inclusive of diverse sexual and gender identities. A core logic advancing this inclusion is to discursively recognize an expanded set of discrete, deconstructed identities-gay and lesbian expands to LGBT, LGBTQ, LGBTQIA1, and so on. But a newer logic stipulates that inclusion arises through using constructive identities that encompass many fluid experiences under a single term (e.g., "queer"). To understand inclusive change, the authors leverage a unique mesolevel site of cultural (re)production: service and advocacy nonprofit organizations. Using event history models, the authors investigate inclusive language change by 735 organizations from 1998 to 2016. They supplement analyses of administrative data with semistructured interviews with 13 nonprofit leaders, providing converging evidence. Findings showcase how bottom-up, horizontal, and top-down pressures explain both the inclusion of discrete identity labels and the shift to constructive logics.