Developmental Milestones

The following links include professional research-based and/or evidence-based information about developmental milestones and sequence of skill development:

Harvard Center for the Developing Child – 8 Things to Remember about Child Development

Child Development Institute – Child Development Sequence

Overview of Developmental Domains (subdomains on BDI-2)



An important aspect included in assessment and evaluation is communication with families. This link is to the TATS page for Family Involvement and contains links and information from sites and resources that provide  research- and/or evidence-based information  about child development.

Child Development page from Family Involvement section on TATS home page

Explanation of Assessment Results

Best Practices for Involving Families in Assessment Process