Hello Lately in OLPC-Sur mail list there has been discussions about working with kids with hearing discapacities especially i like one  experience in Itagui Colombia: <a href="http://inclusion.semitagui.gov.co/index.php?title=Portada">http://inclusion.semitagui.gov.co/index.php?title=Portada</a> other professors in Uruguay are also interested in these matters But my doubt here it's about if are out there studies, thesis, or academic dissertations about how GUIs can  have an impact in child's or persons with disabilities not just censorial but also learning disorders. Are there specific studies related to Sugar? IIRC this was previously discussed so any links or pointers are welcomed My intention is to give this feedback to professors on Colombia and Uruguay.   Rafael Ortiz