Errata

p.24. Of all five models, the most preferred model is model 3 for the US and model 2 for Japan. -> Of all five models, the most preferred model is model 4 for the US and model 2 for Japan.

p.25. The immobility parameter φ decreased between the 1908–26 cohort and the 1967–76 cohort, and then increased. -> The immobility parameter d decreased between the 1908–26 cohort and the 1967–76 cohort, and then increased.

p.25. The mobility parameter d decreased between the 1908–26 cohort and the 1957–66 cohort, and then the d of the 1967–77 cohort increased. -> The mobility parameter φ decreased between the 1908–26 cohort and the 1957–66 cohort, and then the φ of the 1967–77 cohort increased.

p.26. comparing the fit of model 8a and model 8b in Table 4 suggests that change in the immobility association is important in describing change in social fluidity for US men. -> comparing the fit of model 8a and model 8b in Table 4 suggests that change in the mobility association is important in describing change in social fluidity for US men.

以上の誤記があり大変ご迷惑をおかけしますが，結論には影響ありません．