This is a mentored Research Career Development Award to support the career development of clinical investigators in patient-oriented research. Latino children are diagnosed with autism spectrum disorders (ASD) at older ages and typically demonstrate more severe symptoms, putting them and their families at significant disadvantage. Interventions addressing family, community, and health care systems factors hold promise for improving access to ASD diagnostic services for minority children. The goal of this project is to develop an evidence-based intervention to reduce ethnic differences in ASD care among Latinos. Investigators in this study will develop a survey of 350 Latino parents of typically-developing children and children with ASD to assess common beliefs about autism in Latino communities, and to determine which community factors, health beliefs, and health care system factors are associated with delays in ASD diagnosis. With the study’s findings, researchers will then develop a pilot community-based patient navigator intervention designed to reduce barriers to care. In addition to developing an evidence-based intervention to improve diagnosis and treatment of ASD in Latino children, this project will also help such children achieve earlier diagnosis and better long-term prognosis.