From the XpMailingList (2003 June 16 timeframe):
Exoftware did a cool presentation a few weeks ago and they mentioned using an Interface Designer (ID [I think that was the term]). The ID sits down with the customer and together they design the screens - the ID is proficient in UI design rather software development. I can really see the benefit of how they are doing it.
That would be an InteractionDesigner and thanks for the plug, Nick.
Dave P, http://www.exoftware.com
I'd disagree with the above definition, or at least consider it incomplete. I believe an interaction designer is responsible for choosing then designing appropriate interactions a user of a system should have in order to meet their goals. If they're just designing UI, then they are indeed and Interface Designer. That is, they've specialized in a subset of the work done by an interactionDesigner. They haven't done the work to understand users and goals and choose the interaction first.