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Online Exogamy Reconsidered: Estimating the Internet’s Effects on Racial, Educational, Religious, Political and Age Assortative Mating
Abstract
As the Internet’s role in creating new couples continues to expand, now accounting for over a third of recently-formed U.S. couples, its impact on endogamy is increasingly consequential. While there are good reasons to expect greater diversity from online romantic sources, there are also good sociological reasons to predict greater assortativity online. Increases in the rates of interracial and interreligious couples within the U.S. have occurred seemingly in tandem with the rise of online dating, but the evidence connecting online romances and couple heterogeneity have been limited and mixed. Using a unique nationally-representative dataset collected in 2009 and 2017 on how U.S. couples met, and controlling for the diversity of their local geographies, I find that couples who met online are more likely to be interracial, interreligious, and of different college degree status, but also more similar in age. Couples who met online are not more nor less likely to cross political boundaries, however, and not more nor less likely to have educationally different mothers. These exogamy differences can vary by where on the Internet couples met. Population-level estimates suggest that only a small part of the recent changes in couple diversity can be directly attributed to couples meeting online, but there is the potential for more Internet-induced change if it continues to expand as the modal source of romance.
Journal Article
'Feeling at home in Vanuatu' : integration of newcomers from the East during the last millennium
Examines the hypothesis that Polynesian biological affinities observed in ancient individuals from Vanuatu are gendered or sex-specific, and that some of the Polynesian migrations during the last millennium may have involved practices of exogamy (such as inter-regional marriages). Analyses the phenotype, described with morphometric techniques, of 13 individuals uncovered in archaeological sites related to the second millennium CE from two Polynesian-influenced regions of Vanuatu : CRMD (Eretok, Efate, Cental Vanuatu) and Futuna Island (South Vanuatu), compared to 232 individuals from regional reference series. Discusses the results, taking into account their funerary context and their sex affiliation to assess whether Polynesian morphological orientations are sex-specific. Source: National Library of New Zealand Te Puna Matauranga o Aotearoa, licensed by the Department of Internal Affairs for re-use under the Creative Commons Attribution 3.0 New Zealand Licence.
Journal Article
Genomic reconstruction of the history of extant populations of India reveals five distinct ancestral components and a complex structure
India, occupying the center stage of Paleolithic and Neolithic migrations, has been underrepresented in genome-wide studies of variation. Systematic analysis of genome-wide data, using multiple robust statistical methods, on (i) 367 unrelated individuals drawn from 18 mainland and 2 island (Andaman and Nicobar Islands) populations selected to represent geographic, linguistic, and ethnic diversities, and (ii) individuals from populations represented in the Human Genome Diversity Panel (HGDP), reveal four major ancestries in mainland India. This contrasts with an earlier inference of two ancestries based on limited population sampling. A distinct ancestry of the populations of Andaman archipelago was identified and found to be coancestral to Oceanic populations. Analysis of ancestral haplotype blocks revealed that extant mainland populations (i) admixed widely irrespective of ancestry, although admixtures between populations was not always symmetric, and (ii) this practice was rapidly replaced by endogamy about 70 generations ago, among upper castes and Indo-European speakers predominantly. This estimated time coincides with the historical period of formulation and adoption of sociocultural norms restricting intermarriage in large social strata. A similar replacement observed among tribal populations was temporally less uniform.
Journal Article
Endogamy and Religious Boundaries in a Transnational Context—The Case of Knanaya Christians in North America
The Knanaya Christians, also referred to as Thekkumbhagar or Southists, represent a distinct endogamous group within the wider community of Saint Thomas Christians of southern India. Their origins can be traced to the arrival of Jewish Christians led by Knai Thoma or Thomas of Cana, who migrated to the Malabar Coast from Persia in 345CE. Upon their arrival, they mingled with the established Christian population of the Malabar Coast, known as the Vadakkumbhagar or the Northists, whose roots extend back to the apostolic mission of Saint Thomas in the 1st century CE. However, the Knanaya Christians have successfully preserved their unique identity through the practice of endogamy, which keeps their bloodlines separate from those of the Vadakkumbhagar, while also maintaining a spiritual connection and liturgical continuity with the latter. Despite their matrimonial exclusivity, the Knanaya Christians have followed the same developmental path as the larger Thomas Christian community, sharing liturgical practices, enjoying similar privileges, facing the same challenges during the Portuguese era, experiencing divisions in the 17th century, and striving to preserve their identity. The migration of this endogamous community to other parts of the world since the mid-20th century, in similar lines with different groups of Thomas Christians, has posed challenges to their traditions and practices, especially endogamy. This paper explores how Knanaya Christians maintain and adapt their endogamous marriage traditions in transnational settings by focusing on how Knanaya religious authorities and lay members collectively negotiate these tensions—whether by reinforcing endogamy or adapting it in response to shifting realities in North American settings.
Journal Article
Endogamy and relationship dissolution
BACKGROUND Previous studies on the role of partner choice in relationship dissolution have shown that exogamous marriages often have higher divorce risks. Yet, given that these studies focus only on marriages, it remains unclear whether the same dynamics can be seen in unmarried cohabiting couples, or what the exact role of a premarital cohabitation period is. OBJECTIVE This paper aims to examine whether the link between union dissolution and endogamy differs across relationship types by comparing marriages with and without a period of premarital cohabitation and unmarried cohabiting couples. METHODS Based on survival analyses and multivariate event history models, this study analyzes union dissolution risks among married and unmarried cohabiting couples with at least one partner of Belgian, Southern European, Turkish, Moroccan, Congolese, Burundian, or Rwandan descent. We use longitudinal data from the Belgian National and Social Security registers for a sample of couples formed between 1999 and 2001. RESULTS The results indicated that exogamous direct marriages have substantially higher risks of relationship dissolution. Yet, differences in dissolution risks between exogamous and endogamous couples with and without a migrant background become smaller or disappear entirely when unmarried cohabitation is involved. CONTRIBUTION This paper contributes to the literature on endogamy and union dissolution by going beyond the study of marriages. In contexts where unmarried cohabitation has become a common entry point to relationship formation but still has different meanings among majority and minority populations, this paper shows that cohabitation can no longer be disregarded when studying the link between endogamy and relationship dissolution.
Journal Article
Islam Moves West: Religious Change in the First and Second Generations
What happens to the religious identity, belief, and practice of Muslims who settle in Western countries? Do they, or their children and subsequent generations, gradually become more secular? Or do they react against the dominant ethos and perceived prejudice by becoming more religious? We review recent research that touches on these questions. Most Muslim immigrants outside the United States come from rural areas of less developed countries where religiosity is higher than in the receiving societies. Residence in areas of high coethnic concentration, support from religious communities, and religious endogamy help to maintain religious commitment. The situation is more complicated for the second generation. Western culture has an influence, but structural integration does not necessarily reduce religiosity. Some children of immigrants try to follow a \"real\" Islam that has been purified of culturally specific practices. Hostility toward Muslims may lead some to react by increasing their own religious involvement.
Journal Article
The right spouse : preferential marriages in Tamil Nadu
The Right Spouse is an engaging investigation into Tamil (South Indian) preferential close kin marriages, so-called Dravidian Kinship. This book offers a description and an interpretation of preferential marriages with close kin in South India, as they used to be arranged and experienced in the recent past and as they are increasingly discontinued in the present.
Clark-Decès presents readers with a focused anthropology of this waning marriage system: its past, present, and dwindling future. The book takes on the main pillars of Tamil social organization, considers the ways in which Tamil intermarriage establishes kinship and social rank, and argues that past scholars have improperly defined \"Dravidian\" kinship. Within her critique of past scholarship, Clark-Decès recasts a powerful and vivid image of preferential marriage in Tamil Nadu and how those preferences and marital rules play out in lived reality. What Clark-Decès discovers in her fieldwork are endogamous patterns and familial connections that sometimes result in flawed relationships, contradictory statuses, and confused roles.
The book includes a fascinating narration of the complex terrain that Tamil youth currently navigate as they experience the complexities and changing nature of marriage practices and seek to reconcile their established kinship networks to more individually driven marriages and careers.
eBook
Consanguineous marriages, pearls and perils: Geneva International Consanguinity Workshop Report
Approximately 1.1 billion people currently live in countries where consanguineous marriages are customary, and among them one in every three marriages is between cousins. Opinions diverge between those warning of the possible health risks to offspring and others who highlight the social benefits of consanguineous marriages. A consanguinity study group of international experts and counselors met at the Geneva International Consanguinity Workshop from May 3 2010, to May 7, 2010, to discuss the known and presumptive risks and benefits of close kin marriages and to identify important future areas for research on consanguinity. The group highlighted the importance of evidence-based counseling recommendations for consanguineous marriages and of undertaking both genomic and social research in defining the various influences and outcomes of consanguinity. Technological advances in rapid high-throughput genome sequencing and for the identification of copy number variants by comparative genomic hybridization offer a significant opportunity to identify genotype-phenotype correlations focusing on autozygosity, the hallmark of consanguinity. The ongoing strong preferential culture of close kin marriages in many societies, and among migrant communities in Western countries, merits an equivalently detailed assessment of the social and genetic benefits of consanguinity in future studies.
Journal Article
Research collaboration networks in maturing academic environments
We use data on research collaboration among 5,230 scholars in the University of São Paulo between 2000 and 2019 to understand how a network with high academic endogamy is structured, to identify if academic collaboration is more commonly found among those who share endogamy status, and to analyze if the likelihood of tie formation is distinct among inbred and non-inbred scholars. Results show growth of collaborations over time. However, ties between scholars are more likely to occur when endogamy status is shared by both inbred and non-inbred ones. Furthermore, such homophily effect seems to gradually be more influential on non-inbred scholars, suggesting this institution could be missing out on opportunities of exploring non-redundant information from within its own faculty members.
Journal Article