A small study on meditation has confirmed what is pretty well-known already.
“…Mindfulness can be used by almost anyone and learnt online, so could be applied across society. In particular, it has been demonstrated to be effective at improving both mental health and academic performance in schools.” (Experienced meditators display an altered pattern of brain activity during a test of attention and self-control)
Also found was confirmation that the first and second skandhas (form and sensation) “fire” or arise before there is conscious awareness.
…“Unexpectedly, the meditators also showed more activity in their right parietal lobe between 0 and 50 ms after the images were presented on the computer screen. This time period is before the information from the images even reaches the occipital lobe, where vision is processed.” (Ibid)
Mindfulness has many definitions and interpretations. Here is one of my favorites from the Buddha himself:
And what, monks, is the faculty of mindfulness? Herein, monks, a noble disciple is mindful and is endowed with the highest prudence in mindfulness; he is one who remembers and recollects even what is done or said long ago. This, monks, is called the faculty of mindfulness. — S V 197 (Source)
I tend to think that mindfulness is best applied to closely observing the workings of our minds and being honest with ourselves about what we see.
When we communicate information from this side of ourselves to another person, close attention to what we say and how we say it as well as how we hear what they are saying in response can be a very important aspect of Buddhist practice.
Mindfully sharing mindfulness can be a very significant addition to meditative mindfulness.