Empirical Investigation Into Developmental Milestones and the Typical Age of Mastery Acquisition
Abstract:
Empirical evidence is provided to support the emergence and acquisition of developmental milestones. The Battelle® Developmental Inventory, 3rd Edition (BDI-3®) (Newborg, 2020) item difficulty measures and BDI-3 normative data (norms) are used to identify the typical ages that children acquire and master selected milestones.
The typical age of mastery acquisition is presented as an age range and was determined by linking a criterion-based measure that closely approximates the 75% probability of mastery on selected milestones with the BDI-3 norms. This linking of a criterion-based measure with normative data allows for the derivation of an accurate measure of the typical age of milestone acquisition.
Read more in research article by Michael Custer, Hyeonjoo Oh, JP Kim, Hsin-Ro Wei, and Onur Demirkaya.
Expanded Version of the Paper Presented at the Annual Meeting of the National Association of School Psychologists, New Orleans, Louisiana. February 14–17, 2024.
