Few examples exist of applying multi-touch tabletop computing to particular groups of users and tasks. In this abstract, we provide such an example by describing a project that focuses on enhancing communication skills among cognitively disabled children. In carrying out this project, we have come to realize that to successfully implement such a system it takes inclusion or ‘real’ users at early stages in the design process as well as numerous rounds of testing and iteration to overcome the substantial amount of experiential differences between designers and users. We also argue that such a user group cannot naively be regarded as a homogeneous group, expected to provide a unanimous response to particular designs. Rather, we have come to regard these users as making up a heterogeneous group where each individual is vital in contributing and inspiring the design process in his or her own, unique ways.
stellar , 2009.