Dr Jane Squires has served as principal investigator on research studies at the University of Oregon on the ASQ system. She is a professor in special education, focusing on early intervention and early childhood special education. She directs the Early Intervention Program and is associate director of the University of Oregon Center for Excellence in Developmental Disabilities. Dr Diane Bricker is the former director of the Early Intervention Program at the University of Oregon and a key developer of the ASQ and AEPS® systems. She has focused her professional career on the development and study of assessment systems and intervention approaches for young children with disabilities and those at risk for developing disabilities. Dr. Bricker has been instrumental in the development of graduate-level personnel preparation programs that have produced professionals who are delivering quality services to thousands of young children and their families. She has published extensively in the field of early intervention.