A surprisingly high percentage of assistive technology devices (35% or more) are purchased, but not successfully adopted. Through semi-structured interviews with a dozen families, we have come to understand the role technology plays in the lives of families who have a young adult with cognitive disabilities, and how families find, acquire, and use these technologies. This study addresses gaps in existing research and informs future efforts in assistive technology design. Design implications include the importance of simplicity not only in technology function but in configuration, documentation, maintenance, and upgrade or replacement; as well as the need for designers to use methods that consider the multiple individuals and stages involved in the technology adoption process. Author Keywords Cognitive disabilities; ethnography; design; technology adoption; assistive technology ACM Classification Keywords H.5.2 [Information Interfaces and Presentation]: User Interfaces - User-centered ...