Hi Katrice, The "trans-generational" genetic, etc. trauma research that Rachel Yehuda, et al, had done at Mount Sinai Hospital, involving Halocaust survivors and their children, last year, may provide you with suitable research parameters.
From what I read of the Canadian Solicitor General's report on the Aboriginal Schools [in Canada], which I perused at our National Center for PTSD Library, a couple of years ago, there may be some helpful information there. I tried to find that report again, a few weeks ago, at the PTSD library, and it was not shelved, nor did I find a sign-out card in its designated card catalog number/place. You may be able to locate it, on line, as well as other materials, using the search terms in the [NCPTSD Library] PILOTS (Published International Literature On Traumatic Stress) USER'S GUIDE. Search Terms may include: "Aboriginal People", "Native People", as well as a host of other terms. I believe their website is www. ptsd.va.gov, but I could be mistaken. You can google "PILOTS (Published International Literature On Traumatic Stress)" and you should be able to make some headway. When I pulled up the new [ProQuest] PILOTS page, all I found was "Aboriginal Australians". ...I just conferred with our public library reference librarian, and we found: "Mapping the Healing Journey: the final report of a First Nation Research Project on Healing Canadian Aboriginal Communities APC 21 CA (2002)" ("This report is made possible through a joint contribution by the Solicitor General Canada and the Aboriginal Healing Foundation"). Hope this helps. My reference librarian just handed me pages of: "Canada, Aboriginal Peoples, and Residential Schools...They Came for the Children" by The Truth and Reconciliation Commission of Canada (2012) [ ISBN 978-1-100-19995-5 ] (website: www.trc.ca