Abstract
A battery of performance tests, the AGARD STRES battery, was validated against the Comprehensive Ability Battery (CAB) of primary abilities and was found to be measuring largely a speed factor, relatively independent of these CAB abilities. The implications of this finding are discussed in terms of the limitations of the cognitive theory underlying the AGARD STRES battery and the ultimate goal of developing this battery to assess the detrimental effect of stress on the performance of real-life tasks.