Practising Activity-centered design

A decade ago, Don Norman proposed Activity-centered design (ACD) as a better approach compared to Human-cenetered design. I’m curious if anybody here has practised ACD. How was your experience? Did you find it better than HCD/UCD when considering product conversion and usability testing?

I’ve tried looking at some papers on SIGCHI but none of them give any good details on its practice. It’s mostly theoretical in nature.

I think we are all practicing it. Intentionally of unintentionally. From my little experience what I understood is, most of the processes blend different approaches together.