Demographic research mainly focuses on objective variables found in census and survey data. As demographers' interests expand to socially constructed phenomena, the discipline needs to incorporate new tools appropriate for understanding more subjective phenomena. The integration of quantitative...

Special Collection 1: Social Interactions and HIV/AIDS in Rural Africa is a set of papers stemming from the conference "Research on Demographic Aspects of HIV/AIDS in Rural Africa", held at the Population Studies Center, University of Pennsylvania, October 28, 2002. The aim of the conference was...

In this paper I review the concept of tempo effects in demography, focusing on the tempo adjustments proposed by Bongaarts and Feeney and drawing on the work of Ryder and Zeng and Land. I show that the period-shift model that underlies the proposed adjustments can be motivated from an...

This paper investigates the effects of birth outcomes on infant mortality for non-Hispanic white, black, and Mexican-American females in the U.S. (1995-1998). Proportional hazard models with age-varying effects of continuous birth outcome measures reveal larger birth outcome effects on neonatal...