Fararo=Kosaka model (Kosaka, 1988, Kosaka=Fararo, 1991) was not argued
from a point of social mobility much So we point out of this model in
respect of social mobility clearly and analyze the model again. In th
e model (model 2) that is assumed to consider his past images of strat
ification, the past status influences the present stratum identificati
on negatively. In the model (model 3) that is assumed to consider his
past status, the past influences the present positively.