This paper clarifies and provides additional tests presented in the age-period-cohort analysis of nonmarital birth rates in Gray, O'Brien, Stockard, and Stone(forthcoming). Where Martin (forthcoming) has suggested specific alternative specifications or interpretations of our findings, we have...

We discuss how child labor problems may persist in developing countries when adult mortality risks are endogenous. Children provide current consumption through child labor and future consumption via an informal social security arrangement. Poorer parents, unable to invest much in their health,...

In a 2006 article in Demography, Jo AnnaGray Jean Stockard and Joe Stone (GSS i)observe that among black women and white women ages 20 to 39, birth rates increased sharply for unmarried women over the period 1974 to 2000. But they also increased for married women, as well, and yet the total...

The authors employ a newly developed method to disentangle age, period and cohort effects on nonmarital fertility ratios (NFR) from 1972 to 2002 for U.S. women aged 20-44 – with a focus on three specific cohort factors: family structure, school enrollment, and the ratio of men to women. All...

We employ newly developed methods to disentangle age, period and cohort effects on nonmarital fertility ratios (NFRs) from 1972 to 2002 for black and white women aged 20-44 in the United States. We focus on three cohort factors: family structure, school enrollment, and the sex ratio. For both...

This paper proposes and tests a simple joint explanation for i) increases in marital and nonmarital birth rates in the United States over recent decades, ii) the dramatic rise in the share of nonmarital births, and iii) the pronounced racial differences in the timing of childbearing. The...