Why Does Growing up in an Intact Family during Childhood Lead to Higher Earnings during Adulthood in the United States? *

A bstract With a view to finding an explanation of the observed differences in adult annual earnings between workers raised in intact ( INTACT ) and non‐intact families in the US labor market, this study tests two hypotheses. First, workers growing up in intact families during childhood earn more during their adulthood because they acquire more years of schooling, which in turn affect their wages positively. Second, intact family background acts as an instrument for numerous factors that contribute to workers' happiness during adulthood. Since happier workers, with other characteristics held constant, are known to have higher earnings, workers raised in intact families during childhood by leading a relatively happier life during their adulthood earn more than their otherwise identical non‐intact counterparts. Both these hypotheses find strong support from the US data. The evidence of simultaneous relationships between wage and happiness and between happiness and schooling confirms that the true effect of INTACT on wage may be much larger than what is envisaged by a simple one‐step process. Regardless of whether this relationship is due to causation or correlation, the study simply demonstrates that the US evidence of higher earnings associated with workers raised in intact families may be attributed partly to their higher levels of schooling and happier lives. By demonstrating a significant positive relationship between the stability of parental family structure during childhood and earnings during adulthood, the current study highlights the importance of responsible parenthood as a means of improving the child's future economic performance.