Abstract
The influence of noise on the efficiency of the works were studied at Aoba Elementary School under both silent and noisy condition. As the results, 1) quantity efficiency was promoted but that of quality efficiency was lowered by noise in case of elementary school pupil. 2) The mistake in memory test of random figures increased by noise in case of elementary and high school pupil. 3) The mistake in memory test of drawing required thinking increased in case of elementary, middle, and high school pupil. 4) The influence of noise on a simple memory test was not recognized in case of middle and high school pupil. Objective methods for investigating the influence of noise on the works at school were studied.
