ABSTRACT
When performing everyday tasks such as reaching for and replacing objects we rely on information from both vision and touch (kinaesthesis). This chapter investigates the accuracy with which these two sources of information can be integrated using two cross-modal conditions, visual input and kinaesthetic response (V-K) and kinaesthetic input and visual response (K-V). The foregoing predictions were tested by placing a target object at varying distances from observers and subsequently requiring them to reproduce the target position. The pattern of results is consistent with the predictions. First, judgments in the K-V condition were overestimates of the distance of the target from the observer, and the size of these errors increased with the distance of the object from the observer. Second, in the V-K condition, judgments tended to underestimate the true distance of the target, and the extent of the underestimation increased with distance.
