Yesterday I presented the results of the CatchBob! experiment at the french HCI conference. Afterwards I had a relevant discussion with Pascal Salembier about it. His main remarks/questions were:

Apart from the low reliability (+ high subjectivity) of the NASA-TLX method (evaluation of task load), why do I need this kind of index for my study? He was quite skeptical/dubious about using this sort of information and found it was not really relevant in that context. My answer is that I found it interesting to know how the player evaluates the task load in mobile activities + as a verification that not using the location awareness tool is not detrimental in terms of physical/cognitive load.

What would be a field/task I could use to generalize my findings? air-net from intuilab seems to be interesting (displays of all the persons on the airport roads, no studies about how it's used)

Some graphics displays some dispersions that might be explained by the articulation of my qualitative/quantitative data: it's the case: the number and the content of strategy message is an important factor