About

Zhenchao Qian is a professor of sociology and a research associate of the Population Studies and Training Center at Brown University. His research areas include social demography, stratification, and inequality. He studies patterns, trends, and consequences of marriage and cohabitation, focusing on who marries whom and who lives with whom, considering factors such as age, educational attainment, race and ethnicity, and nativity. His work explores assortative mating patterns, their implications for stratification systems, social distance among groups, and the salience of group boundaries. Additionally, he investigates how these patterns, along with changes in marital status and transitions, influence individual wellbeing. His research also encompasses racial identification among children born to interracial couples, immigrant integration in the United States, and social and family change in China. Qian received his Ph.D. in Sociology and Demography from the University of Pennsylvania and has held faculty appointments at Ohio State University, where he served as department chair for five years, and Arizona State University. He is an elected fellow of the American Association for the Advancement of Science.

Research topics

• Demography
• Demographic economics
• Geography
• Psychology
• Sociology

Selected publications

• Introduction

  RSF The Russell Sage Foundation Journal of the Social Sciences · 2025-01-01

  articleOpen access1st authorCorresponding

  <i>U.S. Census 2020: Continuity and Change</i> is the focus of this double issue of <i>RSF: The Russell Sage Foundation Journal of the Social Sciences</i>. This introduction briefly describes the broad socioeconomic changes between 2010 and 2020 in the United States and their implications for inequality, families, and American society. We then review the changes in employment, earnings, and education; housing and residential mobility; families and living arrangements; gender, sexuality, race-ethnicity, immigration, and rural America among others discussed in this issue. We highlight the areas of change, stemming from both changes in data availability and measurement and substantive material outcomes with a focus on whether the patterns follow the trends of past decades or change in new directions that signal more fundamental structural changes in American society.

  PublisherOA PDFDOI

• Identifying the social mechanisms for multiracial-monoracial health disparities

  Humanities and Social Sciences Communications · 2025-07-30 · 3 citations

  articleOpen accessSenior author

  The United States is witnessing rapid growth in multiracial populations, yet the social mechanisms producing health disparities between multiracial and monoracial groups remain poorly understood. Using the nationally representative Behavioral Risk Factor Surveillance System (2001–2012, N = 4,363,547), we examine mental and physical health outcomes through self-reported measures of poor mental and physical health days, systematically investigating four pathways potentially explaining multiracial-monoracial health disparities: 1) socioeconomic status, 2) early life adversity, 3) race-related experiences, and 4) health behaviors. Results based on negative binomial regressions and Karlson-Holm-Breen mediation tests reveal that Black multiracial, American Indian or Alaska Native multiracial, and Other multiracial individuals report worse mental and physical health despite higher socioeconomic status compared to their monoracial counterparts. Among Asian multiracial individuals, worse health outcomes compared to monoracial peers are partially attributed to socioeconomic factors and health behaviors. Across all multiracial groups, health disadvantages are largely explained by differences in early life social conditions, particularly exposure to family instability and adverse childhood experiences. Unexpectedly, race-related experiences show suppression rather than mediation effects, suggesting that accounting for discrimination actually increases observed health gaps. Our findings demonstrate how non-socioeconomic pathways, particularly early life adversity, play crucial roles in producing health disparities in an increasingly diverse society.

  PublisherOA PDFDOI

• Introduction

  RSF The Russell Sage Foundation Journal of the Social Sciences · 2025-01-01

  articleOpen access1st authorCorresponding

  <i>U.S. Census 2020: Continuity and Change</i> is the focus of this double issue of <i>RSF: The Russell Sage Foundation Journal of the Social Sciences</i>. This introduction briefly describes the broad socioeconomic changes between 2010 and 2020 in the United States and their implications for inequality, families, and American society. We then review the changes in employment, earnings, and education; housing and residential mobility; families and living arrangements; gender, sexuality, race-ethnicity, immigration, and rural America among others discussed in this issue. We highlight the areas of change, stemming from both changes in data availability and measurement and substantive material outcomes with a focus on whether the patterns follow the trends of past decades or change in new directions that signal more fundamental structural changes in American society.

  PublisherOA PDFDOI

• Immigration and Fertility in the United States

  International Migration Review · 2025-04-01 · 1 citations

  articleSenior author

  Declines in immigrant fertility from one generation to the next provide an indirect measure of immigrant assimilation. Post-2000 declines in US fertility nevertheless may mask substantial—and growing—heterogeneity, especially across racial and ethnic minorities and new immigrant groups. We apply data from the June Current Population Survey to document generation-to-generation differentials in cohort completed fertility (CCF) since 2000 among America's racial and ethnic minority populations. Our regression decomposition models highlight composition and rate effects on changing levels of CCF nationally and across immigrant and native-born racial groups. CCF remained remarkably stable overall and for each racial group over the 2000-to-2020 period. The analyses nevertheless revealed small but unexpected increases in CCFs from 1.92 to 1.97 over 2000–2020. Growing diversity has, on balance, placed upward pressure on fertility. This has occurred even as fertility rates have declined overall among US racial minorities and immigrant groups since 2000. Trends in US cohort completed fertility reflect off-setting rate and composition effects across our set of explanatory variables. Any upward pressures on fertility from immigration or America's growing racial diversity has been countered by other downward pressures, especially from over-time increases in female education and declines in marriage. This paper documents recent fertility trends and differentials among different generations of racial and ethnic minority women over time. It highlights the importance of changing population composition, including the racial and generational mix of immigrants, for understanding post-2000 fertility trends. It provides an empirical baseline of fertility research in high-income countries.

  PublisherDOI

• P3.14.21 Single-Nucleus RNA Sequencing Reveals Key Pathways and Prognostic Markers in Thymic Carcinoma

  Journal of Thoracic Oncology · 2025-10-01

  article
  PublisherDOI

• Division of household labor in urban China: Couples’ education pairing and co-residence with parents

  Research in Social Stratification and Mobility · 2024-05-29 · 7 citations

  articleSenior author
  PublisherDOI

• Relative Economic Position and Female Marriage Migration: Marrying Men in Taiwan Across Borders and Boundaries

  Population Research and Policy Review · 2022-02-03 · 2 citations

  articleOpen access1st authorCorresponding
  PublisherOA PDFDOI

• Generation, education, and intermarriage of Asian Americans

  2021-10-05 · 2 citations

  book-chapter1st authorCorresponding
  PublisherDOI

• Gender, union formation, and assortative mating among older women

  Social Science Research · 2021-10-08 · 8 citations

  articleOpen access
  PublisherOA PDFDOI

• Racial Pairings and Fertility: Do Interracial Couples Have Fewer Children?

  Journal of Marriage and the Family · 2021-03-05 · 17 citations

  articleOpen access1st authorCorresponding

  OBJECTIVE: Our overall goal is largely descriptive-to compare recent fertility patterns between racially endogamous and exogamous couples in the United States. Evidence of lower fertility among exogamous or interracial couples arguably provides indirect evidence of social distance and cultural and economic integration. BACKGROUND: The growth of interracial marriage and cohabitation has fueled the rise in biracial or mixed-race children. Fertility rates are uneven among racial and ethnic groups, seemingly rooted in stigma and cultural differences (e.g., fertility norms). Whether fertility is different among interracial couples is unclear: Fertility rates that largely conform to the population of racially endogamous White couples provide evidence of social integration whereas differential fertility may reveal gender dynamics in fertility decision-making, including power relationships that depend on the race of male and female partners. METHOD: to compare past-year fertility patterns among endogamously and interracially married and cohabiting couples. RESULTS: Fertility is generally lower among racially exogamous than endogamous unions, especially among Asian American-White couples. Fertility among American Indian-White couples is much closer to patterns of White couples than of American Indian couples. Fertility among other interracial couples nevertheless varies by the race of male partners. That is, fertility of the Black male/White female and the Hispanic male/White female couples is similar to patterns found among endogamous Black and Hispanic couples, respectively. The White male/Black female and the White male/Hispanic female couples follow the fertility patterns of White couples. CONCLUSION: In general, the fertility levels of interracial couples are intermediate between those of endogamous White couples and their endogamous Black, Hispanic, or American Indian counterparts, but vary significantly by the race-gender mix of partners.

  PublisherOA PDFDOI

Recent grants

• Initiative in Population Research

  NIH · $4.3M · 2009–2014

• Administrative Core

  NIH · $2.9M · 2001–2027

• Training in Demography

  NIH · $8.0M · 1987–2028

• NIH Grant R01HD043035

  NIH · $597k · 2007

Frequent coauthors

• Daniel T. Lichter

  Cornell University

  53 shared

• Genze Shao

  Peking University

  25 shared

• Daixiong Chen

  Hunan Nonferrous Metal Research Institute

  25 shared

• Yanrong Su

  Temple University Health System

  25 shared

• Martha Crowley

  North Carolina State University

  21 shared

• J. Sanford Schwartz

  Cincinnati Children's Hospital Medical Center

  9 shared

• José J. Escarce

  University of California, Los Angeles

  9 shared

• Yue Qian

  University of British Columbia

  9 shared

Education

• PhD, Department of Sociology

  University of Pennsylvania

Awards & honors

• Fellow of the American Association for the Advancement of Sc…