PROJECT SUMMARY This proposed supplement responds to the NIH goal of enhancing the diversity of the research workforce. The supplement will provide support for Ms. Adjoa Manu, who will soon begin her third year as a PhD student in the joint Oregon Health & Science University – Portland State University School of Public Health. Ms. Manu is an African American woman who has experience as a research assistant on reproductive health projects in Ghana. As a public health doctoral student, Ms. Manu now seeks to expand her research experience and develop further expertise to prepare her for leading research projects of her own. Dr. Horner-Johnson, Principal Investigator for the ongoing NICHD-funded project Understanding and Supporting Reproductive Decisions Among Women with Developmental Disabilities that Affect Cognition (R01HD105655), will guide, support, and mentor Ms. Manu in working toward her goal of becoming an independent researcher. Ms. Manu will be co-mentored by Dr. Eden (co-investigator on R01HD105655) and by Dr. Cirila Estela Vazquez Guzman, an experienced qualitative researcher focused on health of marginalized populations. To effectively support and train Ms. Manu, Dr. Horner-Johnson and co-mentors have designed a two-year mentoring and career development plan that includes structured training, active participation in the parent project, and execution of a complementary research project to support and enhance the work of the parent project. Ms. Manu will build quantitative and qualitative research skills by analyzing existing national survey data on feelings about pregnancy and factors associated with those feelings among women with cognitive disabilities; exploring the perspectives of developmental disabilities (DD) services providers regarding barriers and facilitators to supporting women with DD-C in pregnancy planning; and obtaining feedback from DD services providers on a prototype of an interactive decision aid to support pregnancy planning among women with DD-C. These aims supplement the work of the parent project, which is designing a decision aid to promote active engagement in informed reproductive decision-making among women with DD-C. We anticipate that working closely with DD services systems will be a key strategy for future implementation of the decision aid. Findings from the proposed aims will inform development and dissemination of the aid and help obtain buy-in from DD services providers, who play an essential role in facilitating access to information and resources for many people with DD-C.