Improvements in this union may also come from intervention programs which seek to accomplish their goals through changes in the parent-youth relationship. A program in Southern California, for example, sought to prevent tobacco and alcohol use through the informative bilingual lessons, social skills training, and communication development between parents and children. Six hundred sixty migrant Hispanic families with adolescents participated in the eight-session program, including three parent-child sessions, and a homework component with which parents were encouraged to help. Experimental evaluation found that Hispanic adolescents from families with fewer children experienced notable improvements in parent-child communication (Litrownik et al., 2000).