Hi
Thanks for your messages
There are a few reasons why this research focuses on parents rather than young people with autism.
A primary reason is that because there is so limited research in this area, this research is an exploratory and open study. Given the difficulties that some people with autism may have with social interaction and communication, it is potentially a big ask to discuss very personal issues with a stranger via Skype where the questions will be quite abstract and open to interpretation. This isn’t to say that someone with autism wouldn’t be able to complete an interview, but research cannot be conducted that puts participants in any discomfort.
Another main reason is that the research requires open discussion about self-harm which may be very triggering for people currently cutting - interviewing young people would be distinctly less ethical due to the increased likelihood of causing them distress.
Also, as you mention, teenagers often don’t like to discuss their self harm, which means that at health appointments it is often the voice of parents that professionals hear, as parents advocate for their children. This means that the parents views are often the ones that professionals are working with, and this is especially true in many autism services.
Finally there is lots of evidence which suggests that parents will be strongly affected by their child self-harming, so it is important to speak with parents to find out what they go through themselves and whether there needs to be more support in services for parents as well as their children.
Hope that helps and do let me know if you have any thoughts