Jeff, I regret that I just turned 66 years old, and would be ineligible to participate in your research of English speaking Adults between 18 and 65, in North America.
However, I am curious if you're using the original ACE screening tool, the World Health Organization's ACE International Questionaire, and/or the supplemental questions proposed by Pediatrician Nadine Burke Harris.
I wish you the best in your doctoral endeavor.