The family size utility function.
D002648:Child; D005191:Family Characteristics; D005193:Family Planning Services; D005260:Female; D005298:Fertility; D006801:Humans; D008297:Male; D008433:Mathematics; D009042:Motivation; D010298:Parity; D010549:Personal Satisfaction; D011336:Probability; D011594:Psychometrics; D011647:Puerto Rico; D012201:Reward; D012737:Sex Factors; D014481:United States