Abstract
In this study, the effect of the illuminance of LED lamps on long term memory is verified in the conditions of 400 lx, 700 lx, 1000 lx according to the standards of study room illuminance between 400 lx, the minimum and 1000 lx, the maximum suggested by KSA 3011. Word fragment task is used to measure the long term memory. As a dependent task, 90 words made up of 7 letters are selected among 2700 words which have low frequency provided by sesame word. According to the experiment result, the rate of long term memory is 60.42% under the condition of 400 lx, which is the most effective, 59.38% under the condition of 700 lx, and 52.68% under 1000 lx. In addition, the p value between 400 lx and 1000 lx is 0.028, which is statistically significant. The significance of this study lies in that the effect of the illuminance of LED lamps on long term memory, rather than the existing issues such as attentiveness or work memory is searched, suggesting the possibility that the lower, rather than lighter the illuminance of LED light is, the more effective long term memory is.
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