Meet the Trainers
Jantina Clifford, Ph.D.
Jantina Clifford, Ph.D., is a member of the Ages & Stages International Research team and has been involved in developing and evaluating early childhood assessment measures for over 20 years. She has participated in the ongoing research and development of ASQ products and other measures, including the AEPS and SEAM. Dr. Clifford also provides training and technical assistance on using ASQ-3 and ASQ:SE-2 in diverse health, educational, and social service settings across the U.S. and internationally.
Jane Farrell, M.S.
Jane Farrell, M.S., retired after 25 years as a child development specialist who provided direct services to children 0-5 with delays and disabilities and their families. Her roles included developing specialized programming and providing consultation and community-wide training relating to early intervention and early childhood special education. She worked in both overseas military communities and Lane County, Oregon. For 30 years, she has contributed as a member of the ASQ training and development team, designing and conducting extensive training on ASQ-3 and ASQ:SE-2 with multi-disciplinary and culturally diverse programs and systems across the U.S. and Canada.

Kristin Funk, M.A., LCSW
Kristin Funk, M.A., LCSW, is a licensed clinical social worker and psychotherapist in private practice. In addition to conducting regular training on the ASQ-3 and ASQ:SE, she has worked on and coordinated several community-based systems-change grants and research projects. Her projects include Project SEAM: Preventing Behavior Disorders and Improving Social-Emotional Competence in Infants and Toddlers with Disabilities, a five-year research project to conduct psychometric studies for validation of the Social-Emotional Assessment/Evaluation Measure (SEAM™).
Lawanda Potter, M.S.
LaWanda Potter, M.S., is retired as Co-director at the University of Oregon’s Early Childhood Coordination and Referral, Evaluation and Services Program (EC CARES) in Eugene, Oregon, an early intervention/early childhood special education program in Oregon. Ms. Potter has been a member of the Ages & Stages Questionnaire (ASQ) team for the past 30 years. She has been involved with several research studies on ASQ®, including questionnaire revisions, data analysis, and documentation. She provides training and technical assistance on ASQ across the United States.
Elizabeth Twombly, M.S.
Liz Twombly, M.S., has been a member of the Ages & Stages Questionnaire (ASQ) team for the past 30 years. In this role, she takes part in the ongoing research and development for ASQ-3 and ASQ:SE-2. Ms. Twombly also provides training and technical assistance on the use of these screening tools in diverse health, educational and social service settings across the U.S. and internationally.
Sue Yockelson, Ph.D.
Sue Yockelson, Ph.D., is an Assistant Professor of Special Education at Brandman University. Sue received her degree from the University of Oregon Early Intervention Program and has a background in education for typically and atypically developing children. She provides instruction on developmental screening of young children using ASQ.