The purpose of this NOFO is to create short courses on utilizing theNIH Stage Model to develop behavioral interventions to promote healthy aging and prevent illness, improve care, foster disease management, assist with end of life decision-making and care, and support the needs of the growing older adult population. The term behavioral intervention is used broadly here, to include a variety of non-pharmacological interventions for individuals, dyads, families, groups, communities, organizations, and systems.The NIH Stage Model is a conceptual framework of behavioral intervention development composed of six stages: basic science (Stage 0), intervention generation, refinement, modification, and adaptation and pilot testing (Stage I); traditional efficacy testing (Stage II); efficacy testing with real-world providers (Stage III); effectiveness research (Stage IV) and; dissemination and implementation research (Stage V). The goal of theNIH Stage Model is to produce potent, scalable, and culturally competent behavioral interventions that are defined by their mechanism(s) of behavior change (MoBC(s), so examination of MoBC is encouraged in every stage of intervention development. The Modelcan be used for the development of single or multi-component interventions, and for interventions meant for individuals, dyads, groups, communities, organizations, or systems. This RFA supports the development, delivery, and evaluation of a short-course curriculum to equip investigators to apply theNIH Stage Model to intervention development research.