Individuals are recognized in society through the statuses they occupy and the roles they enact. The society as well as individuals is dynamic. Men are normally engaged in endless endeavor to enhance their statuses in society, move from lower position to higher position, secure superior job from an inferior one. For various reasons people of the higher status and position may be forced to come down to a lower status and position. Thus people in society continue to move up and down the status scale. This movement is called social mobility.
The study of social mobility is an important aspect of social stratification.Infact it is an inseparable aspect of social stratification system because the nature, form, range and degree of social mobility depends on the very nature of stratification system. Stratification system refers to the process of placing individuals in different layers or strata.
According to Wallace and Wallace social mobility is the movement of a person or persons from one social status to another.W.P Scott has defined sociology as the movement of an individual or group from one social class or social stratum to another.