Her research examines interpersonal and family communication variables related to problem behavior such as substance abuse and suicide. The Pennsylvania State University’s Qualitative Research Group is organized under the direction of Dr. Miller-Day and she is currently the Principle Qualitative Investigator of a National Institute on Drug Abuse [NIDA] funded line of research—the Drug Resistance Strategies Project and has served as the primary qualitative methodologist for this research for the past 20 years. This work has developed one of the most successful evidence-based substance use prevention programs in the United States (see SAMSHA’s National Registry of Evidence-Based Prevention and Practice).