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Little Kids, Big Questions
is a series of 12 podcasts that translates the research of early childhood development into parenting practices that mothers, fathers and other caregivers can tailor to the needs of their own child and family. Click here to listen to or download the podcasts. This podcast series is generously funded by MetLife Foundation.

DC:0-3R is Being Revised

With the help of the DC:0-3R Revision Task Force, ZERO TO THREE is once again tackling an update and revision of the DC:0-3R.  Over the next three years, a Revision Task Force will consider changes to DC:0-3R.  The Revision Task Force will make content-related decisions with input from the clinical and research literature, users worldwide, and feedback from recognized experts in particular areas.   Revision Task Force members are: Charley Zeanah (Chair), Alice Carter, Helen Egger, Miri Keren, Mary Margaret Gleason, Alicia Lieberman.

If you would like more information on DC:0-3R, please click here.

If you would like more information on the members of the DC:0-3R Revision Task Force, please click here.

To purchase DC:0-3R and related resources, visit the ZERO TO THREE Bookstore

We Want Your Input 

DC:0-3R is designed to guide clinical formulation, enhance professional communication, and provide a basis for research evaluation and continuous improvement.   We welcome your input!  ZERO TO THREE would like to understand your experience with DC:0-3R and solicit your feedback and suggestions for updates and revisions.  Please click here to complete a users survey, deadline for completing the survey is September 15, 2013. Share the link with your colleagues!  With your help, we will be able to make revisions that reflect the knowledge and experience of DC:0-3R users worldwide. 


Originally published in 1994, ZERO TO THREE’s Diagnostic Classification of Mental Health and Developmental Disorders of Infancy and Early Childhood (DC:0-3) was the first developmentally based system for diagnosing mental health and developmental disorders in infants and toddlers.  Its diagnostic categories reflected the consensus of a multidisciplinary group of experts in early childhood development and mental health. 

The revised DC:0-3 (DC:0-3R) draws on empirical research and clinical practice that have occurred worldwide since 1994.   DC:0-3R, published in 2005, extends DC:0-3 by incorporating empirical research and clinical practice.  It supports clinicians in preventing, diagnosing, and treating mental health problems in the earliest years.  Specifically, DC:0-3R is designed to help mental health and other professionals

  • Recognize mental health and developmental challenges in young children,
  • Understand how relationships and environmental factors contribute to mental health and developmental disorders,
  • Use diagnostic criteria effectively for classification and intervention, and
  • Work more effectively with parents and other professionals to develop effective treatment plans.

For more information about the revision, please email us at info@dc03r.org.

Learn More

DC: 0-3 revisions - Explains the need for a revision to DC:0-3

Clinical Formulation In Infancy and Early Childhood - Clinical formulation involves the drawing together of multiple observations and sources of information about the individual within a general diagnostic scheme, so as to guide the clinician about what to do next.

DC:0-3R Forms to Reproduce - Four forms from DC:0-3R

Diagnostic Guidelines - Clinicians may find them helpful when using DC:0-3R to diagnose the mental health and developmental disorders of very young children.

The DC:0-3R Multi-Axial System - DC:0-3R continues the multiaxial classification system that has been so useful in clinical formulation. Use of the multiaxial system for clinical formulation focuses the clinician's attention on the factors that may be contributing to the difficulties of the infant or young child, adaptive strengths, and additional areas of functioning in which intervention may be needed.

The Diagnostic Process - The diagnostic process consists of two aspects: the classification of disorders and the assessment of individuals.

ZERO TO THREE Articles on DC: 0-3R - Zero to Three Journal articles about diagnosing developmental delays and disorders in infants and toddlers.



border=0 Disorders of Behavior and Emotional Regulation in the First Years of Life - Provides a scientifically proven demonstration of how to help families struggling with common and behavioral disorders. More Details

ZERO TO THREE Articles on DC: 0-3R
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