Social stratification
Social mobility

Social mobility is the movement of individuals, social groups or categories of people between the layers or within a stratification system. This movement can be intragenerational or intergenerational. Such mobility is sometimes used to classify different systems of social stratification. Open stratification systems are those that allow for mobility between, typically by placing value on the achieved status characteristics of individuals. Those societies having the highest levels of intragenerational mobility are considered to be the most open and malleable systems of stratification. Those systems in which there is little to no mobility, even on an intergenerational basis, are considered closed stratification systems. For example, in caste systems, all aspects of social status are ascribed, such that one's social position at birth persists throughout one's lifetime.
punctuation:no_comma, detectable_format:number_bullet_lists[4]