THE EFFICIENCY OF INSTRUCTIONAL CONDITIONS - AN APPROACH TO COMBINE MENTAL EFFORT AND PERFORMANCE-MEASURES

This article reports on a calculational approach for combining measure s of mental workload and task performance that allows one to obtain in formation on the relative efficiency of instructional conditions. The method is based on the standardization of raw scores for mental effort and task performance to z scores, which are displayed in a cross of a xes. Relative condition efficiency is calculated as the perpendicular distance to the line that is assumed to represent an efficiency of zer o. We conclude that the method for calculating and representing relati ve condition efficiency discussed here can be a valuable addition to r esearch on the training and performance of complex cognitive tasks.