Anecdotally I've seen such claims, but have seen mixed results as well. I've also encountered people who clearly had an ego about how little ego they had. Yes,

Anecdotally I've seen such claims, but have seen mixed results as well. I've also encountered people who clearly had an ego about how little ego they had. Yes, it was just as ridiculous as it sounds. I've never seen anything that looks like solid research on the topic.