sentences:  Collaborating with Elena Sliepcevich and David Duncan, his publications from the early 1980s largely focused on the study of risk taking and risk reduction related to alcohol and other drug use in youth.Many of the studies during this early stage of his career were conducted in rural settings, thus providing a catalyst for his later work in the SIU-C Center for Rural Health and Social Service Development.Throughout his career many of his publications have been concerned with instrument development, needs assessment, program evaluation, and the creation of responsive interventions and curricula.