Who Stays Single? A Longitudinal and Global Investigation Using WVS Data

Historically, singlehood is a growing demographic trend shaped by economic, social, and personal factors. This study examines the key influences associated with this phenomenon across diverse global contexts based on empirical evidence provided by WVS (World Values Survey), which covers over 100 countries and spans four decades. A multi-technique analytical approach is applied to identify the most robust predictors of singlehood. This approach involves feature selection, cross-validation, robustness checks, and statistical modeling (parsimonious models with near-excellent or excellent classification accuracy as AUCROC > 0.9). The results indicate that age and parental status are negatively associated with singlehood, while precarious employment status is positively linked. Co-residence with parents also appears closely related to singlehood. Other factors, including education level, social class, and settlement size, also correlate with singlehood patterns, as resulting from supplemental analyses. Moreover, gender and regional analyses reveal some variations in these associations, highlighting the interplay between personal, cultural, and economic contexts. These findings also align with social and economic theories of marriage, emphasizing the impact of life course factors, financial stability, and cultural norms. They contribute to a deeper understanding of demographic shifts. They also provide meaningful and well-founded insights as well as strategic guidance for policy in areas such as youth employment, social welfare, urban planning, and demographic adaptation.