Adding and averaging angles: comparison of haptic-visual and visual-visual information integration.

Abstract One group of Ss added and another group of Ss averaged pairs of angles presented simultaneously according to a factorial design. One set of angles was presented haptically and then visually, the other set being presented visually on both occassions. Although analysis of variance indicated no main effect due to sensory mode of presentation, some interactions due to sensory mode were significant. The adding functions were parallel, but the averaging functions converged with a significant interaction, suggesting a differentially weighted integration model.