A critical appraisal of the relationship between speech and gesture and its implications for the treatment of aphasia

The paper by Rose is an important and timely attempt to outline the implications of research on gesture and speech for the treatment of aphasia. But this is not an easy task given that major theoretical disagreements exist within the field; fundamental disagreements as to whether iconic gestures function primarily for the speaker or for the listener. It is also not made easy by the apparently contradictory research findings that many of the core empirical studies have produced. The current paper argues that Rose needs to take a much more critical perspective on some of the core studies in this area, including research on the tip-of-the-tongue phenomenon, which is one important area of disagreement with regard to the lexical retrieval hypothesis of iconic gesture and research on the possible communicational effects of iconic gesture. This paper argues that much of the research, when critically reviewed, points towards the communicational theory of gesture and away from the lexical retrieval hypothesis and ...