The Development Paradox: Cross-National Evidence on Socioeconomic Stratification of Social-Emotional Competence across 15 Societies

Background and Purpose: Social-emotional competence (SEC), the ability to identify and regulate emotions, build positive relationships, and make responsible decisions, is increasingly recognized as a core component of human capital. Yet whether SEC is systematically stratified by family socioeconomic status (SES), and whether this stratification varies across developmental contexts, remains unclear. This study examined two questions: (1) Is the SES–SEC association cross-culturally consistent? (2) Does societal development level moderate this association? We tested competing predictions from the industrialization hypothesis (development narrows inequality) and the effectively maintained inequality theory (advantaged families shift competition to new domains such as “soft skills”).

Methods: Data came from the OECD Survey on Social and Emotional Skills Round 2 (SSES R2, 2023), comprising 65,612 students aged 10–15 across 15 cities/regions worldwide. A comprehensive SEC index (SEC15) was constructed from all 15 subdimensions of the SSES Big Five framework (Cronbach’s α = 0.889). A two-step analytic strategy was employed: (1) within-site school fixed-effects regression estimating SES→SEC15 gradients, and (2) site-level meta-regression examining whether the Human Development Index (HDI) moderated the magnitude of these gradients.

Results: The positive SES effect on SEC15 was nearly universal: 14 of 15 sites showed significant positive gradients (p < .05), with standardized effects ranging from 0.004 (Delhi, India, nonsignificant) to 0.280 (Jinan, China). Meta-regression revealed a “development paradox”: societies with higher HDI exhibited larger SES–SEC gradients (β = +0.468, p = .021, R² = .345). This effect strengthened after excluding the Jinan outlier (R² = .482, p = .006), confirming a robust cross-cultural pattern. Delhi’s exception reflected SES showing negative effects on achievement motivation and persistence, offsetting positive effects on other subdimensions, revealing a culturally distinct institutional mechanism.

Conclusions and Implications: Contrary to the optimistic assumption that development automatically narrows competence inequality, more developed societies show greater socioeconomic stratification of SEC. We propose the concept of “SEC developmental infrastructure”: richer institutional channels in developed societies (e.g., structured extracurricular programs, cultural enrichment activities) enable high-SES families to more effectively convert economic capital into children’s social-emotional competence. For social work practice and policy, these findings caution against incorporating SEC into educational evaluation and selection systems without equity safeguards, as doing so may inadvertently create new channels for class reproduction. School-based SEC programs should prioritize equitable access for low-SES youth, and social policies should invest in community-level SEC developmental resources to counteract stratification and promote democratic participation for all.