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About the Developers

ASQ and ASQ:SE Lead Developers

Diane Bricker, Ph.D., Professor Emerita, Early Intervention Program, Center of Human Development, University of Oregon, Eugene, Oregon

Photo of Diane BrickerDr. Bricker is the former director of the Early Intervention Program at the University of Oregon and a key developer of ASQ. 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.

Lead author
Ages & Stages Questionnaires® (ASQ)
ASQ:SE in Practice

Co-author
Ages & Stages Questionnaires®: Social-Emotional (ASQ:SE)
The ASQ User’s Guide
The ASQ:SE User’s Guide


Jane Squires, Ph.D., Professor and Director, Early Intervention Program, Center on Human Development, University of Oregon, Eugene, Oregon

Photo of Jane SquiresDr. Squires has served as principal investigator on research studies at the University of Oregon on ASQ and ASQ:SE. 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. Squires has directed national outreach training activities related to developmental screening and the involvement of parents in the assessment and monitoring of their child’s development. She currently directs research grants related to early childhood mental health and systems change related to early identification and treatment of newborn infants exposed prenatally to drugs and alcohol. In addition to her interests in screening and early identification, Dr. Squires directs the doctoral and master’s-level early intervention/special education personnel preparation programs and teachers courses in early intervention/special education at the University of Oregon.

Lead author
Ages & Stages Questionnaires®: Social-Emotional (ASQ:SE)
The ASQ User’s Guide
The ASQ:SE User’s Guide

Co-author
Ages & Stages Questionnaires® (ASQ)
ASQ Scoring and Referral


ASQ and ASQ:SE Co-Authors

Elizabeth Twombly, M.S., Senior Research Assistant, Early Intervention Program, Center on Human Development, University of Oregon, Eugene, Oregon

Ms. Twombly has been involved in research, outreach, and training projects related to ASQ for 14 years. Most recently she has worked as a Senior Research Assistant in the development of ASQ:SE and as a co-author on the recently published Ages & Stages Learning Activities. Ms. Twombly trains early childhood professionals nationwide from fields such as early intervention, child care, and public health on the development of screening systems in home-visiting, center-based and medical settings. Ms. Twombly trains on the use of ASQ and ASQ:SE as tools to screen and monitor general development and social-emotional development in children from the ages of birth to 6 years. She has a master's degree in early intervention from the University of Oregon.

Lead author
Ages & Stages Learning Activities
ASQ Scoring and Referral 

Co-author
ASQ:SE in Practice
The ASQ:SE User’s Guide

Presenter/trainer
Using ASQ to Screen Young Children for Developmental Delays (Brookes on Location seminar)
Using ASQ:SE to Assess Young Children for Social or Emotional Difficulties (Brookes on Location seminar)

Provided assistance with
Ages & Stages Questionnaires® (ASQ)


Jane Farrell, M.S., Early Intervention/Early Childhood Special Education Specialist, Early Childhood Coordination and Referral, Evaluation and Services Program (EC CARES), Lane County, Oregon

Ms. Farrell was the original ASQ outreach project coordinator for the University of Oregon’s Early Intervention Program, providing training and consultation on the systematic use of ASQ in 25 states. She also served as an early intervention specialist in Wiesbaden, Germany, where she provided training on the use of ASQ for military communities living overseas. 

Currently, Ms. Farrell offers direct services to young children, birth to 5 years of age, who are experiencing developmental delays or disabilities. Her roles include home visitor, parent/toddler group teacher, preschool teacher, and Individualized Family Service Plan coordinator.

Co-author
Ages & Stages Questionnaires on a Home Visit
Ages & Stages Questionnaires® (ASQ)

Presenter/trainer
Using ASQ to Screen Young Children for Developmental Delays (Brookes On Location seminar)


Ginger Fink, M.A., Research Assistant, Early Intervention Program, Center on Human Development, University of Oregon, Eugene, Oregon

Ms. Fink has worked in the field of early childhood education for more than 30 years. She served as the training coordinator for ASQ at the University of Oregon, Eugene.

Ms. Fink has worked in many capacities. Currently, she is a private consultant in the area of parent–child programs and teacher education strategies, and she teaches early childhood courses at Clackamas Community College, Oregon City, Oregon. She has worked as curriculum developer toward the development of a statewide series of community-based parent–child programs in Honolulu, Hawaii, as a teacher and program director with Head Start programs, and as a disabilities specialist for the Region X training and technical assistance network.

Co-author
Ages & Stages Learning Activities


LaWanda Potter, M.S., EC CARES Representative, Early Childhood Coordination and Referral, Evaluation and Services Program (EC CARES), University of Oregon, Eugene, Oregon

Ms. Potter has been involved with several research studies on ASQ, including questionnaire revisions, data analysis, and documentation. She has also provided outreach training on ASQ across the United States.

Lead author
Ages & Stages Questionnaires on a Home Visit

Co-author
The ASQ User’s Guide

Provided assistance with
Ages & Stages Questionnaires® (ASQ)


With Assistance By (in alphabetical order)

Maura Schoen Davis, M.S., Early Intervention Program, Center on Human Development, University of Oregon, Eugene, Oregon

Ms. Davis is a doctoral candidate at the University of Oregon and is writing a dissertation proposal to further investigate the interrater reliability and concurrent validity of ASQ:SE. She has a master's degree in school psychology and has worked in early intervention and early childhood special education since 1991. Her research interests include screening and assessment of very young children.

Ages & Stages Questionnaires®: Social-Emotional (ASQ:SE)


Younghee Kim, Ph.D., Associate Professor, Master of Arts in Teaching Program, Education Department, Southern Oregon University, Ashland, Oregon

Dr. Kim graduated from Sogang University in Seoul, Korea, and received her master’s degree and doctorate from the University of Oregon in the area of early intervention/early childhood special education.

Dr. Kim’s special research interests include alternative assessment for young children with special needs, parent involvement in early intervention, and young children with emotional and social challenges, as well as multicultural education for children with diverse backgrounds.

Ages & Stages Questionnaires®: Social-Emotional (ASQ:SE)


Linda Mounts, M.A., Infant Development Specialist, Regional Center of the East Bay, Oakland, California

Ms. Mounts is an infant development specialist and has worked for many years in clinical and research settings with infants and toddlers. While at the Center on Human Development, University of Oregon, she assisted with development of and research on ASQ. She is employed by the Regional Center of the East Bay in northern California, evaluating young children from birth through 3 years of age.

Ages & Stages Questionnaires® (ASQ)


Robert Nickel, M.D., Professor of Pediatrics, Department of Pediatrics, Child Development and Rehabilitation Center, Oregon Health Sciences University, Portland, Oregon

Dr. Nickel has served as medical director of the Eugene office of the Child Development and Rehabilitation Center (CDRC), Oregon Health Sciences University, and as former director of the Center for Children and Youth with Special Health Needs at CDRC.

Dr. Nickel has been instrumental in the production of other materials related to developmental monitoring activities, including the Infant Motor Screen (screen test/manual and videotape), which is part of a training program for primary health care professionals. As a developmental pediatrician, he attends a number of clinics for children with special health care needs in the Portland and Eugene CDRC offices and at outreach sites.

Ages & Stages Questionnaires® (ASQ)


Suzanne Yockelson, Ph.D., Research Associate, Early Intervention Program, Center on Human Development; and Program Coordinator, Educational Studies: Educational Foundations, and Instructor, Teacher Education Program, College of Education, University of Oregon, Eugene, Oregon

Dr. Yockelson consults with various state programs on using ASQ for developmental screening of infants and young children. She teaches courses on child development, research, and curriculum at the University of Oregon's College of Education. Dr. Yockelson's research interests include the social and emotional development of infants and young children and parent education.

Ages & Stages Questionnaires®: Social-Emotional (ASQ:SE)

Presenter/trainer
Using ASQ to Screen Young Children for Developmental Delays (Brookes on Location seminar)
Using ASQ:SE to Assess Young Children for Social or Emotional Difficulties (Brookes on Location seminar)




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