This is going to be a bit of a naive post - more of a set of questions, than an answer.  I have a feeling that readers will be able to help me out by pointing me to information.

I've spoken before about how feedback works, and how for some areas (such as science) feedback works really well, and how for other areas, feedback is quite a challenge.

You practice weightlifting?  You can measure your body fat, measure your biceps, triceps, etc.  It's pretty easy for a sports medicine researcher to be able to put together an exercise group, do a pre-analysis of the body and psychological types of the subject exercise group, and then track results as this groups lifts weights for 3 months.

In writing code, a similar thing is possible.  You run the code, and one quickly gets feedback, output, whether the program has the desired result.

For other practices, however, measuring improvement is not as simple. 

AQAL (me, you, we, it)  is already pre-existent everywhere.  As such, feedback should be able to do be developed for meditation, in all areas.

Biofeedback is one way to get an "it" reading on meditation practice.

Self-reporting is a way to get a "me" reading on meditation practice.

Social science and group surveys, using various statistical models, is a way to get a "we" reading on various forms of meditation practice/insight training.

Currently, what is the state of the art regarding the "its" perspective in meditation ?  Would this be the Wild Divine software program I've read about? Would it be products built by EEG Spectrum? 

(Caveat - for me, I understand from experience that there is "nowhere to go".  I slip in and out of a state of what I call "inclusivity" where all elements of consciousness, whether the body, the mind, time, space, etc, all seem secondary to a prior Consciousness. 

It would be wonderful to have that experience all the time, although I must say my competence levels (and caring about my competence levels) seem to drop off dramatically when I am in this state.

So I understand that "that" cannot be measured, as this is the ground of all measurement.)

However, I also understand that my body is generally happier and more buzzed after running or yoga, my mind is generally more peaceful and open after concentration meditation, my will center is generally more engaged and present when actively accomplishing, and my heart opens dramatically when giving, or doing heart practice meditation.

The dichotomy between these two ways of being is explored by David John Peckinpaugh in this post.

But to continue, in the integral sense of things, accurate measurement and feedback is completely necessary.

I would be interested to hear how other people gather and use feedback, either individually, or in groups, or technically.

Again, apologies for this type of all-over-the-place unfocused post - I'm really reflecting and asking questions here.