I feel more people-centred after focused mental work that involves marshalling intuition - this was after hitting high dual n back levels (12+) for which conscious rehearsal strategies were necessarily eschewed in favour of recourse to 'feel'.

This is incredibly interesting to me. Have you found anything else that uses intuition like that? How about music, or physical activities?

Does anagramming, etc. help your concentration? I have to confess I'm not clear why anagramming is any less intuitive and dual n-back more intuitive. When I anagram it feels like letter sequences pop into my head by intuition, while I've only used conscious rehearsal strategies for dual n-backing.