Abstract
Part 1 of this study examined of the appearance of α-waves in the morning would enhance business performance of that day, or if good business performance would increase α-waves for that day's evening. The latter tendency was determined stronger. Meanwhile, a pattern in which the appearance of α-waves in the morning resulted in good business performance, which then led to the high α-wave values in the evening, also occurred once in a while. In Part II, conditions leading to this pattern were examined through experiments. Based on the results, factors enhancing business performance were also investigated. It was found that good results would be achieved by (1)making and carrying out work plans that will lead to impressive results and (2)excluding factors obstructing the progress of work plans. Of them, (1)was found to have a greater impact on enhancing business performance.
