This contribution provides a long-term assessment of intergenerational social mobility trends in the United States across the 20th and early 21st century and assesses the determinants of those trends. In particular, we study how educational expansion has contributed to the observed changes in mobility opportunities for men across cohorts. Drawing on recently developed decomposition methods, we empirically identify the contribution of each of the multiple channels through which changing rates of educational participation shape mobility trends. We find that a modest but gradual increase in social class mobility can nearly exclusively be ascribed to an interaction known as the compositional effect, according to which the direct influence of social class backgrounds on social class destinations is lower among the growing number of individuals attaining higher levels of education. This dominant role of the compositional effect is also due to the fact that, despite pronounced changes in the distribution of education, class inequality in education has remained stable while class returns to education have shown no consistent trend. Our analyses also provide a cautionary tale about mistaking increasing levels of social class mobility for a general trend towards more fluidity in the United States. The impact of parental education on son's educational and class attainment has grown or remained stable, respectively. Here, the compositional effect pertaining to the direct association between parental education and son's class attainment counteracts a long-term trend of increasing inequality in educational attainment tied to parents' education.

Based on data from the Panel Study of Income Dynamics and the Socio-economic Panel, we study the class mobility of three concurrent generations in the U.S. and Germany. We find that, in both countries, the grandfathers' class is directly associated with their grandchildren's social position. We propose three possible mechanisms which could explain the observed multigenerational mobility patterns. First, we consider the role of class-specific resources for mobility strategies. Second, we suggest a more general explanation by integrating grandparents' class into the reference frame for mobility decisions. Third, we argue that multigenerational class associations could be the result of categorical inequality based on race or ethnicity. We find that outflow mobility rates differ across grandfathers' class positions. Three-generational immobility is most frequent in lower and higher class positions. Loglinear analyses show that, in both countries, significant grandfather effects foster immobility within most classes and limit mobility between the working and service classes in Germany specifically. These effects partially lose significance if we only study white Americans and native Germans. Combining the two national mobility tables, we find that the pattern of threegenerational mobility is similar in both countries.

We study the relationship between inter-class inequality and intergenerational class mobility across 39 countries. Previous research on the relationship between economic inequality and class mobility remains inconclusive, as studies have confounded intra- with between-class economic inequalities. We propose that between-class inequality across multiple dimensions accounts for the inverse relationship between inequality and mobility: the larger the resource distance between classes, the less likely it is that mobility from one to the other will occur. We consider inequality in terms of between-class differences in three areas—education, wages, and income—and in a composite measure. Building on sociological mobility theory, we argue that cross-country variation in mobility results, in part, from families adapting to different levels of between-class inequality. Consistent with this hypothesis, we find a negative correlation between inter-class inequality and social fluidity, with between-class inequality being a better predictor of mobility chances than conventional distributional measures. We also find that the resource distance between classes is negatively related to the strength of their intergenerational association for some off-diagonal origin and destination (OD) class combinations.

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In social stratification research, the most frequently used social class schema are based on employment relations (EGP and ESEC). These schemes have been propelled to paradigms for research on social mobility and educational inequalities and applied in cross-national research for both genders. Using the European Working Conditions Survey, we examine their criterion and construct validity across 31 countries and for both genders. We investigate whether classes are welldelineated by the theoretically assumed dimensions of employment relations and we assess how several measures of occupational advantage differ across classes. We find broad similarity in the criterion validity of EGP and ESEC across genders and countries as well as satisfactory levels of construct validity. However, the salariat classes are too heterogeneous and their boundaries with the intermediate classes are blurred. To improve the measurement of social class, we propose to differentiate managerial and professional occupations within the lower and higher salariat respectively. We show that implementing these distinctions in ESEC and EGP improves their criterion validity and allows to better identify privileged positions.