Hi Claudia,
I have a question - I have noticed that the in the ISWA (2010) the movement arrows are not regular with sizing..
For instance there are four sizes
and here:   there are two sizes.

I am quite sure you talked about this in your phd - My questions are:
1) What was the feedback from the deaf?
2) Did you decide to invent more glyphs or reduce the ones that had many? If you decided to reduce  them - why?

Thank you - if you would refer me to the exact pages in your thesis where you discuss this - i would be so much obliged!! It is difficult for me to find the location in your work because i am not fluent in french and italian