News Release

SUN PRAIRIE, Wis. (January 2, 2018) – Ventris Learning, LLC has reached agreement with authors Harry Seymour Ph.D, Thomas Roeper Ph.D., Jill de Villiers Ph.D., Peter de Villiers Ph.D., and Barbara Pearson Ph.D. to become the exclusive publisher of the Diagnostic Evaluation of Language Variance™ (DELV) effective immediately.

Based in research funded by the National Institutes of Health, the complementary tests, DELV Norm Referenced (DELV™–NR), and DELV Screening Test (DELV™–ST) were designed to enable language professionals and educators to identify speech and language disorders/delays in children speaking different varieties of English, including Mainstream American English (MAE) and African American English (AAE).

DELV author, Harry Seymour, says, “The DELV is the only test of its kind. It provides a level of analysis deeper than dialect to discover alternate markers of disorder. It had two national normings: one on a sample that represents the general American population, and a second on 100% AAE speakers. It is culturally and linguistically fair to both speakers of MAE and speakers of other varieties of English such as AAE. We are very happy to partner with Ventris Learning to keep the DELV tests on the market.”

“The DELV is a linguistically responsive measure that reading specialists and other diagnosticians can use to identify the degree of language variation of speakers of Non-Mainstream English (NME),” said Robert Meyer, Ventris president. “We believe that with accurate identification of language variation, speakers of NME are less prone to being over/under-identified for speech and language services.”

About Ventris Learning
Ventris Learning’s language development resources support teachers to better meet the instructional needs of students underserved in literacy. Its offerings include ToggleTalk® contrastive analysis K-1 supplemental curriculum; Code Switching Lessons, a professional development offering for grades 2-6+ English Language Arts teachers; the Sunform™ Alphabet System; and additional language/literacy innovations under development. To learn more,


Robert Meyer