Kind of. Experience in researching/trying to understand it.

You've mentioned DD is ASD/ADHD-ish before, I think? It wouldn't surprise me if it's all related.

This is an interesting article: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3227121/

The gist of it is that "Pure O" may be a little off base, descriptively, because people may have "mental compulsions" that are difficult to observe.

Is your DD having intrusive thoughts?