Have you experimented or played around with ways of teaching these lower-level skills?

Yes. As a practical matter, it's more like teaching people what to stop doing than what to do - i.e. to stop talking over their experience and speculating about it. Some people are worse about doing that than others; you have to stop them a lot before they "get it".

More recently, I've been teaching people my SEED mnemonic, and it seems to help them realize what they're supposed to be paying attention to, but I don't have any real empirical data on that. I'd have to get a bunch of untrained people and test how quickly they were able to stop abstracting experiences, having split them into a control and experimental group... and then I'd still have no way to blind myself, unless somebody else taught them about SEEDs.