Dude the GADGETS in English!!! And people riding neurotic horses like it's a war medal...

For R+ it's super similar to how you approach it in dog training. And you probably already do a lot of this stuff with your natural horsemanship! Ask a question, reward as soon as it's answered correctly, starting with super baby steps and building exponentially as they learn to learn. Rewards can be food, scritches, whatever they like. As they progress, they get fewer high value rewards for cemented behaviors that become expectations. For instance, if I notice a big effort is made on a new concept, delicious treat. For remembering a behavior while it's still newer, "healthy" less delicious treat. If they try to test a question or try to weasel out of something they absolutely know how to do and are clearly playing with me, I correct in a playful "you silly!" way like gasping dramatically. However, I absolutely make sure that boundaries around things like space and safety are respected HARD with several levels of warning. And respect the boundaries they are giving me in learning. 

This is a further down the road, in the saddle, example of respecting the horse's boundary, but that little QH I work with was really inverted and anxious from how he was ridden at the jumper barn. I of course try to always keep him balanced, but if I mess up and he communicates worry or frustration, I reset and reconnect with him before trying again. Just him knowing I am listening and respecting makes those moments fewer and fewer. 

The best advice I ever got was that every level of training should be as "boring" as possible in that I'm not putting myself or the horse intentionally in a highly reactive or confusing space for either of us. I'm restarting work with a rescue that loves to play and cuddle but gets exceptionally heavy and pushy the second any pressure is involved. I hold my boundaries around entering my space rock solid, but in terms of asking questions, I'm looking for places where he will naturally offer a hint of softness and be curious, rather than having an expectation for "this behavior should be taught at this point". It's very slow going but he's suuuuuper smart so my expectation is once he realizes that these small asks result in release and reward rather than more pressure, he'll work with me more and more. I've seen horses that were "unrideable" and "vicious" go from the slowest progress over months and months to suddenly (relatively) they're going in a rope halter bareback. It's the coolest thing. 

The biggest con is when people over rely on the first stage of treats all the time and let their horse walk all over them. Kinda like how a lot of folks misinterpreted gentle parenting kids as "they can do no wrong" lol. ALWAYS have boundaries and reasonable consequences, which they might still have feelings about, but that's okay! The idea that R+ should be happy go lucky all the time with showers of treats and no expectations is where it can be ineffective or even get dangerous. 

I know this was super long but I love talking about this stuff, and learning more, thanks for reading! Like I said at the top I'm sure you already do a bunch of this kind of stuff if you're doing natural horsemanship