I have only recently joined xmca and find the discussions very
interesting, especially the one of affectivity. I have tried in my
Phd (which I recently completed) on group problem solving (among
adults) to do away with the affectivity-cognition dichotomy. I used an
everyday-cognition framework and relied on the mediated action
principle. I found this very useful for the interpretation of my data
and feel that I obtained interesting insights into everyday problem
solving behaviour. However I struggled to find literature which uses
the Vygotskying mediated action principle to explain interactions
between peers (especially if these are adults). I firmly believe that
mediation does not only happens in the learning of children or
between people with an unequal level of knowledge or expertise. I
argued for the use of the mediated action principle to explain
interaction and joint learning in a group of equals (in expertise and
knowledge) and explained how this happened. However it would be great
to find more literature or ideas on this issue,
Hilde Van Vlaenderen