ATLAS-PA was developed for children who are 3 to 7 years of age and includes three subtests, including items related to rhyming, blending, and segmentation.

It has four key features consistent with principles of Universal Design and removes barriers of assessment for children with speech production difficulties and/or other disabilities:

(1) requires no spoken responses by utilizing a multiple-choice format;

(2) is web-based so that it is accessible using tablets and laptops;

(3) is an adaptive test, which minimizes testing time; and

(4) includes individualized instructions and opportunities for practice, to make it accessible to a broader range of children.