This article uses a hazards model permitting continuous covariates and fixed effects to estimate the effect of local employment opportunity and family background on the cohabitation and childbearing of black youths from low-income households. Support is found for W. J. Wilson's hypothesis that employment opportunity encourages the formation of cohabitational unions, as well as for the "opportunity-cost" hypothesis that employment opportunity discourages childbearing outside such unions. However, the latter effect appears to be larger, suggesting that the opportunity-cost hypothesis is the primary channel through which higher employment rates result in lower rates of illegitimacy among underclass youths.

Randall J. Olsen, D. Alton Smith, George Farkas, Structural and Reduced-Form Models of Choice among Alternatives in Continuous Time: Youth Employment under a Guaranteed Jobs Program, Econometrica, Vol. 54, No. 2 (Mar., 1986), pp. 375-394

Improving academic outcomes for economically disadvantaged students has proven challenging, particularly for children at older ages. We present two large-scale randomized controlled trials of a high-dosage tutoring program delivered to secondary school students in Chicago. One innovation is to use paraprofessional tutors to hold down cost, thereby increasing scalability. Participating in math tutoring increases math test scores by 0.18 to 0.40 standard deviations, and increases math and nonmath course grades. These effects persist into future years. The data are consistent with increased personalization of instruction as a mechanism. The benefit-cost ratio is comparable to many successful early childhood programs.