Through the IDA Institute, the IDA-2 authors offer essential training, consultation, and technical assistance.

IDA2 Technical Qualities


The IDA Procedures provide a framework for the collection, review, and integration of data from multiple sources. Because the fundamental purposes of this process include assessment and recommendations based on assessment, practitioners and others should ask the same questions they would ask of any other assessment unfamiliar to them. Key questions should address the reliability and validity of IDA in the context of its stated goals and intended uses.


Because IDA is intended as an integrated process rather than a simple test instrument, answers to these key questions cannot be found only in a series of tables of statistical and psychometric data.  The Provence Profile is considered to be a standardized criterion-referenced tool and yields "age-referenced" levels of competent performance. The items and their expected age of attainment were derived from norm referenced instruments, literature and clinical norms. The Provence Profile is standardized with a uniform administration procedure and there are reasonable degrees of freedom in the presentation of items which is seen as a strength given the expected variability in the behavior of young children." The intended use of the Provence Profile involves the presence of and reports by a parent or caregiver. In addition, the specific results of the Provence Profile are always to be interpreted and used within the context of the full set of IDA Procedures and should never be taken alone or out of this larger context. Nevertheless, using the Provence Profile in the intended context does not free this component of the IDA assessment from conventional demands for evidence of validity or reliability; nor does the structure of the IDA as a process obviate any requirement to provide such evidence.



IDA Part C Crosswalk 2016-17

The IDA-2 is a best practice assessment that measures all of the developmental domains and aligns with OSEP early childhood outcomes.
The IDA-2 Infant Toddler Developmental Assessment can be purchased as a complete kit with everything you need to get started.

Who We Are


The IDA Institute is the home of the Infant Toddler Developmental Assessment (IDA-2), which considers the full range of infant and toddler development, appreciating that each domain is influenced by, and interacts continuously and dynamically with, every other domain of development.  Through the IDA Institute, the IDA-2 authors offer essential training, consultation, and technical assistance.

The IDA-2 Authors


  • Sally Provence M.D.
  • Joanna Erikson MPH
  • Susan Vater Ed. M.
  • Kyle Pruett M.D.
  • Jennifer Rosinia Ph.D., OTR/L
  • Saro Palmeri M.D.

Contact The IDA Institute


128 Beacon Street

Hartford, CT 06105


Phone: 860-232-0890

Fax: 860-461-0289

IDA Institute is the Home of the IDA-2.
The IDA Institute helps practitioners take full advantage of the IDA-2 best practices in developmental assessment.

© 2019 IDA Institute

IDA-2 is a Best Practice assessment that measures all domains of development and aligns with the OSEP Early Childhood Outcomes and Head Start Child Outcomes