Statistical Measures for Workload Capacity Analysis

Joseph W. Houpt, Wright State University - Main Campus
James T. Townsend


A critical component of how we understand a mental process is given by measuring the effect of varying the workload. The capacity coefficient is a measure on response times for quantifying changes in performance due to workload. Despite its precise mathematical foundation, until now rigorous statistical tests have been lacking. In this paper we demonstrate statistical properties of the components of the capacity measure and propose a significance test for comparing the capacity coefficient to a baseline measure or two capacity coefficients to each other.