Looking for Research on Loss Aversion

We're dealing with an ongoing research process and finding some noticeable pain points, specifically related to loss aversion (this is for a risk investments app).

After lots of brainstorming, we're still having a tough time in terms of reducing friction (our failure is validated by research), so I'd like to know if there is any tool, recommendation, research or paper dealing with loss aversion in general, preferably applied to the investments and risk of monetary loss subject.

Just to be clear: I'm well aware of principles of scarcity and loss aversion, and we have a behavioral psychologist on our team, so identifying the problem or why is it happening is NOT the issue. I'm looking for ideas and strategies to overcome this pain point, at least something we can test with users