I was saying in the Type 1 sub-forum that I do work with people who have experienced childhood abuse of various kinds, and in my experience, it doesn't mean you're more likely to be a type 6 - I can't say if that's because people are born with their type or they just react to the abuse differently. I see a lot of 2's, 1's, 6's and 9's who have experienced childhood abuse and are still very much dealing with the effects - I've also seen other types dealing with these issues, but those are the most common so far. But I've also seen folks of various types, including 1,2,6, and 9's who were more easily able to move on from abuse for a variety of reasons. I've only been in this field for 2 years (about 40-50 clients probably) but so far I've only worked with one 3, no 4's, and no 8's - at least that I could type.
I wouldn't say childhood abuse makes people who are other types appear as 6's - their issues just manifest in a different way. Having said that, I've also probably worked with more 6's than any other type (not specifically related to abuse necessarily).