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As the causes of intra-generational mobility, some external structural variables have been the focus of attention in social inequality studies; while in occupational attitudes studies, it has been assumed that some inherent attitudinal variables have an impact on job mobility, which is one side of intra-generational mobility. This paper investigates (I) whether workers' occupational attitudes actually affect the separations from their jobs, and (2) whether they do the mobility from worker's stratifications, which is other side of intra-generational mobility. Using panel data that traced male samples over a long period of 27 years (1979-2006) makes it possible to test the effects of workers' occupationaL attitudes on their intra-generational mobility, which have not yet been demonstrated. In my analysis, I distinguish between Job Mobility from one's company and Class Mobility from ones occupational stratification, and employ occupational commitment as the occupational attitude. The results of the analysis using a discrete-time logit model show that men's occupatsonal commitment in 1979, which is the start time of that panel-observation, decreased the likelihood of their Class Mobility after that. On the other hand, it does not an explicit effect on their Job Mobility. These findings imply that in a period of post economic growth, men's occupational attitudes played the more important role in fluidity and stability of social mobility rather than of those in the labor market. [ABSTRACT FROM AUTHOR]

In this paper, we aim to clearly explain the complex relation between advancement rate and intergenerational social mobility by formalizing a mathematical model. In order to derive general propositions that do not depend on the particular values of parameters, we simply assume that a society consists of four types of subgroups, namely, the combinations of high/low education and high/low class origin, and that a person with high education is more likely to enter the high class. We analyze two situations-first, the case where class origin has an effect on intergenerational mobility and second, the case where only educational qualifications affect mobility. The former is called the lexicographic order model; the latter, the educational credentialism model. By comparing these two models, we specify the condition that educational expansion leads to the formation of a closed society in terms of intergenerational social mobility. The models also show the relation between the equalization of educational opportunities and a decline in the rate of upward mobility. Moreover, we not only derive theoretical propositions but also attempt to verify the goodness of fit of the models by using nationwide statistical data. [ABSTRACT FROM AUTHOR]