Kimberly J. Vannest, PhD, is an associate professor in the department of educational psychology at Texas A & M University. She has published more than eighty books, peer-reviewed publications, and software on the topic of intervention, progress monitoring, and single design. She has received awards for her research, teaching, and service and speaks internationally on the topic of single case research. Richard I. Parker, PhD, is professor emeritus at Texas A & M University. He has published more than one hundred articles on this and related topics, and continues his scholarship in single case research and design. He currently lives in California. John L. Davis, MA, LSSP, is a doctoral candidate in the department of educational psychology at Texas A & M University. He is a licensed specialist in school psychology with over ten years of experience providing direct service in schools. He has published on topics including measurement considerations in response to intervention, acceptability of intervention protocols in schools, and assessment of students with emotional disturbance and autism.