The decade between 1998 and 2008 saw rapid increases in research on adolescent sexual orientation development and related health issues, both in the quantity and in the quality of studies. While much of the research originated in North America, studies from other countries also contributed to emerging understanding of developmental trajectories…

Examined whether relationship seriousness influenced youths' sexual behaviors and attitudes. Found that interpersonal context influenced sexual timetables of whites more than other groups. Some ethnic differences in sexual timetables were diminished when sociodemographic factors were controlled. Youth generally began sexual activities with a…