My understanding of this:
"Eleanor waited to do all her studying the night before the exam" — that's data: it would show up on a video recording of the scene.
"Eleanor procrastinates" — that's a judgement/interpretation/opinion: it exists in someone's mind (i.e. the person making the judgement).
This isn't to say "judgements bad, don't make judgements". That would be nonsensical. We all make judgements/interpretations all the time, they're a necessary part of the human experience.
But (in my experience) it's really _really_ helpful to differentiate between these two categories. It opens the whole thing up and allows things to proceed more smoothly and effectively (in conjunction with other tools in the toolset - but this is core).
To expand on the example: if, as Eleanor, I hear the judgement I'm probably, yes, more likely to shut down and get defensive - which gets none of us anywhere. OTOH if I hear the data, there is then perhaps more room to have a conversation about what's going on. It might be that my ADHD is contributing to this behaviour, and perhaps if I get that it has a negative impact on someone else, I might decide to ask them (or someone else) for support in working out a better way to deal with this. Or I might simply be asking for more understanding, different structures. I don't know. But the kind of mutual acknowledgement of experience, feelings and wants that I'm talking about tends to be shut down by unowned judgements presented as fact.