My interpretation of that concept (and pretty much everyone's I've spoken about it so far) is different. When I think about "values", I think of things in life that are especially important for me (both in the inner and outer world), kinda standards that I really care about, want to meet, and would like to live my life by. For me, for example: personal responsibility, fairness, competency, using my talents to contribute to things that go beyond me, a relatively high need for originality and quality in things that I do, a good level of equanimity, etc. I have a need to feel aligned with these things on a certain level in order to feel balanced and good about myself. I think feelings or conclusion like "I am broken" or "I am worthless"are not values really but a certain vision/interpretation of the self.

Maybe if someone has unrealistically high inner standards and expectations for the self (perhaps implanted by significant people in our lives), that is a kind of "core value" that creates the feelings of being broken and worthless as a consequence?

In any case, I like this topic but in fact the whole area of values probably has little to do with what EMDR is supposed to target. Maybe the traumas it is supposed to treat are what can distort core values in the first place, but I feel this is more abstract than how EMDR itself works.