From Tom Roeper
The Diagnostic Evaluation of Language Variation (DELV) was developed by a cooperative team from the Linguistics Department and Communications Disorders Dept in 2005. It is now being relaunched with a new publisher: Ventris. https://www.ventrislearning.com/delv/
This disorders test is designed to probe deep principles of grammar (long-distance wh-movement, wh-pairing, quantification, pragmatics, etc) without being biased against dialect speakers, particularly AAE speakers.
The DELV included many faculty from linguistics, beyond the authors Harry Seymour, Tom Roeper, and Jill deVilliers (to whom Peter deVilliers and Barbara Pearson have been added): Lisa Green, Lisa Selkirk, Peggy Speas, Angelika Kratzer, Joe Pater, and John Kingston were all involved in major and minor ways. In addition many students were involved: Bart Hollebrandse, Mike Dickey, Elena Benedicto, Deanna Moore (and I hope I have not forgotten anyone).