A couple of points here. I really don't recommend working with 14/15 students in a team. Web-PA was really designed with smaller teams in mind and most pedagogic research suggests teamwork assessment is best for teams between 3-6 or thereabouts - this coincides with my own experience. As for non-submission, I also think this would generally solve most of your non-submission problems. You should, as Paul suggests, certainly talk to students in the first place of their personal responsibility to the team effort and therefore their responsibility for taking part in the anonymous peer assessment. I also suggest you indicate in the project brief that there will be a mark penalty for non-submission (but keep this small). Also use the built in emailing system to remind those who haven't submitted shortly before the deadline. - On occasions I have been inclined to extend the deadline on a 'final chance to submit' announcement which usually brings them out of the woodwork. Having used Web PA for over 10 years with hundreds (ne thousands) of students, I've never really encountered a reluctance to submit beyond the simple - can't be bothered - syndrome. If you find much reluctance on grounds concerning reluctance to rate each other then I suggest it may be that this is through the newer feedback/text features that I simply don't use.
Hope this helps,
From: WebPA [mailto:[log in to unmask]] On Behalf Of Martin McCarthy
Sent: 04 October 2012 21:36
To: [log in to unmask]
Subject: Student Nil Responses
Has anyone found a satisfactory way to deal with nil responses from students. In previous paper-based peer assessments for teams of 14/15 students, participants have often commented that they did not wish to evaluate a particular team member, or members. This was because their personal sub-tasks and responsibilities in the team project meant that they had little contact with some other members engaged their own sub-tasks. Students thus felt unable to comment on their performance in these sub-tasks.