S.F. State researchers say 'family ties' inspire mental health in Chinese American communities. Tina Yothers would be proud. Caring for younger siblings or family elders may well be a pain in the ass -- but it could well be keeping San Francisco's Chinese American teens well-adjusted, according to a just-published study. San Francisco State professors Linda Juang and Jeffrey Cookston spent two years following the lives of 218 Chinese American teens in two San Francisco high schools. In a paper p