VISUAL SPEECH AIDS - A BRITISH SURVEY OF USE AND EVALUATION BY SPEECHAND LANGUAGE THERAPISTS

One hundred and eighty speech and language therapists throughout the U K completed a postal questionnaire which asked for ratings of visual s peech aids (VSAs) on a number of dimensions together with information regarding frequency of use of such aids, comments on the range of appl icability of each type of aid and other demographic data relating to t he diversity of client groups covered in case loads. The results (usin g analysis of variance) revealed a main effect of VSA type. There was also a main effect of question type; all VSAs scored poorly on some di mensions as compared with others. Furthermore there was a significant interaction between type of VSA and dimension type. This suggests that VSAs not only tend to be built for particular client groups, but that the makers tend to focus an some specific design criteria to the detr iment of others. These results are discussed with respect to the futur e design of VSAs, and with respect to their testing and future evaluat ion.