Multiple resources and performance prediction

TLDR

This paper traces the origins and history of multiple resource theory as it explains differences in dual‑task interference. The authors present a 4‑dimensional multiple resources model that predicts greater interference when tasks share perceptual/cognitive stages, sensory modalities, codes, or visual channels, and they provide a computational rendering of this model. The model is shown to predict interference differences in operational environments, yet the authors identify three challenges—task demand coding, task allocation, and visual resource competition.

Abstract

This paper describes the origins and history of multiple resource theory in accounting for differences in dual task interference. One particular application of the theory, the 4-dimensional multiple resources model, is described in detail, positing that there will be greater interference between two tasks to the extent that they share stages (perceptual/cognitive vs response) sensory modalities (auditory vs visual), codes (visual vs spatial) and channels of visual information (focal vs ambient). A computational rendering of this model is then presented. Examples are given of how the model predicts interference differences in operational environments. Finally, three challenges to the model are outlined regarding task demand coding, task allocation and visual resource competition.