Szalma, J.L., Hancock, P.A., Dember, W.N., & Warm, J.S. (2005). Training for vigilance: The effect of KR format and dispositional optimism and pessimism on performance and stress. British Journal of Psychology, 97(1), 115-135.
This study investigated the impact of knowledge of results (KR) format on the performance and stress associated with a vigilance task.