To account for this, one might imagine a set of coefficients that describes the relative power of each resource pool for creating telepresence. The coefficient vector may be identified as a i . 2.0 Describing task performance and workload in these terms may be illuminating. Telepresence is a weighted sum of the relative expenditure of resources on processing stimuli from the computer-mediated environment. In its simplest form, it is the ratio of resources devoted to the computer-mediated environment to total resources available.
Performance is a weighted sum of the resources expended on processing task-related information.
From the equations, it appears that telepresence may vary independently from performance because of the freedom of di to affect telepresence without affecting performance. If so, telepresence and task performance may be negatively correlated. The difference is that workload must include resources devoted to the local environment, which contribute to workload but detract from telepresence.