| Abstract: | English and Italian encoders were asked to communicate two-dimensional shapes to decoders of their own culture, with and without the use of hand gestures, for materials of high and low verbal codability. The decoders drew what they thought the shapes were and these were rated by English and Italian judges, for similarity to the originals. Higher accuracy scores were obtained by both the English and the Italians, when gestures were allowed, for materials of both high and low codability; but the effect of using gestures was greater for materials of low codability. Improvement in performance when gestures were allowed was greater for the Italians than for the English for both levels of codability. An analysis of the recorded verbal utterances has shown that the detriment in communication accuracy with the elimination of gestures cannot be attributed to disruption of speech performance; rather, changes in speech content occur indicating an increased reliance on verbal means of conveying spatial information. Nevertheless, gestures convey this kind of semantic information more accurately and evidence is provided for the gestures of the Italians communicating this information more effectively than those of the English. |
