We can also note that SES is a complex unit of measurement of a person's economic and sociological standing, like for instance, his prestige, power or else his economic well-being (Hoff et al., 2002;Oakes and Rossi, 2003).
one can conclude that the SES is a complex measure of evaluation that differs from a research to another because it takes into account the work experience, the economic position, or the social status.