The Infant-Toddler Developmental Assessment (IDA-2)

Achieves greater depth in the essential psycho-social domains

The IDA Institute Brings All the Pieces Together

Comprehensive Instruction from Authors of the Assessment

IDA-2 covers the full range of child development and psychosocial domains

IDA is an essential in your professional toolkit for assessment, intervention planning and professional preparation.

Gilbert M. Foley, Ed.D., Clinical Psychologist

The IDA-2 philosophical and theoretical foundations are a solid base for developmental assessment best practice.

Lois Davis Ph.D., IDA Practitioner and Trainer

I would hope that all assessments in the first few years would follow the procedures of the IDA.

T. Berry Brazelton, M.D., Best Selling Author

Welcome to the IDA Institute

Home of the IDA-2

For all professionals working with infants, toddlers, and their families in a wide range of settings...

The IDA-2 considers the complexity and interdependence of health, family, and emotional-social factors that influence the child's development throughout the assessment process. The process guides collection and integration of data from multiple sources. The measure results in a descriptive summary of developmental competencies that includes a performance age range with percentage delay and Service Plan.

Learn What Parents and Providers Say About IDA


Meet the IDA Authors

Sally Provence M.D. (1917-1993)

Sally Provence M.D., Distinguished Professor of Pediatrics at the Yale Child Study Center and the Yale School of Medicine, was a Founding Member of Zero To Three. Sally was infinitely wise about young children and was a powerful influence on all her colleagues and students including the other IDA authors.  Her work is reflected throughout the IDA and the Provence Developmental Profile is an important part of her legacy.


Kyle Pruett M.D.

Kyle D. Pruett, MD, Past President of the Zero To Three Board of Directors and Clinical Professor of Child Psychiatry at the Yale School of Medicine, is author of over a hundred publications, international lecturer, media consultant and pioneering researcher. An internationally known expert and forensic consultant, Dr. Pruett was recently awarded the Lifetime Teaching Award at the Yale Child Study Center.


Joanna Erikson M.P.H.

Joanna Erikson, M.P.H., is a specialist on public policy and child development with a focus on children with developmental disabilities.  She was a Lecturer at the Child Study Center, Yale University and worked closely with Sally Provence to develop the IDA. As program director of IDA and editor of the IDA Study Guide, she coordinated the planning, field testing, evaluation studies and dissemination of the program. 


Meet The IDA Institute Faculty

Susan Vater Ed.M.

Susan Vater Ed.M., is a policy, planning, and program development specialist with expertise in clinical early childhood development, interagency collaboration, and systems design. One of the original IDA authors, she currently serves as President of the CT Association of Infant Mental Health (CT-AIMH) and recently led the initiative to design and implement the Mid-level Developmental Assessment (MLDA) model.


Jennifer Rosinia Ph.D., OTR/L

Jennifer Rosinia is an Occupational Therapist and Child Development Specialist, with a special interest in the influence of stress on the developing child. Adjunct faculty at the Erikson Institute for many years, as well as an IDA-2 author, Dr. Rosinia is the president of Kid Links Unlimited, Incorporated, a company whose mission is to link theory to practice, parents with professionals and kids with their optimal potential.


Gilbert Foley Ed.D.

Dr. Foley serves as Consulting Clinical Psychologist, New York Center for Child Development (NYCCD) and Clinical Director of the Training and Technical Assistance Center. Dr. Foley is Co-Director of the Graduate Program in Infant Mental Health and Developmental Practice, a US Department of Education funded Personnel Preparation Program at the Adelphi University Institute for parenting.




IDA Institute News

IDA Institute Hosts Web Meeting on Virtual Assessments

IDA Institute Hosts Web Meeting on Virtual Assessments

With the ongoing Coronavirus pandemic, new challenges have been presented to early childhood practitioners who administer developmental assessments...
IDA-2 in the Spotlight at 2019 Zero to Three Conference

IDA-2 in the Spotlight at 2019 Zero to Three Conference

Join us at the Zero To Three 2019 Fort Lauderdale Conference! Kyle Pruett M.D. and Kimberly Martini Carvell M.A. are presenting at the Hot Topics ...
Problems with Tainted Water in Flint Continue

Problems with Tainted Water in Flint Continue

We voice our concern about the increasing numbers of infants, toddlers and young children exposed to high lead levels in their drinking water wit...