There are three key measures for determining someone's socioeconomic status, according to the National Committee on Vital and Health Statistics: income, education, and occupation. In addition, the American Psychological Association also recommends considerations of family size, since the number of earners and dependents in a household has a strong impact on the family's financial security. One may also consider subjective factors, such as occupational prestige or a person's subjective perceptions of social class.