selective sorting meaning in Hindi

Examples

1. Much of his argument is centered on a notion of self-selective sorting that began in the 1960s and 1970s, when he argues that cognitive ability became the essential predictor of professional and financial success, and people overwhelmingly began marrying others in the same cognitive stratum and living in areas surrounded largely by others in that same stratum, leading to not only an exacerbation of existing economic divides, but an unprecedented sociocultural divide that had not existed before in America.