Abstract
The present study was done to identify environmental sounds as pleasant or unpleasant for use as stimuli. On a questionnaire of 138 pleasant and 150 unpleasant environmental sounds, students estimated the frequency of pleasant and unpleasant experiences for each sound item. More than half of the students rated 25 environmental sounds “always” or “often” pleasant and that 26 sound sources were rated as “always” or “often” unpleasant. Factor analyses (Promax) yielded 20 factors with eigenvalues greater than 1.0 for pleasant sounds and 27 for unpleasant sounds. Some of natural and musical sounds were pleasant for most subjects. Sounds of alarm, excretion, and scratching were unpleasant for most subjects. Some environmental sounds may be estimated as pleasant for some but unpleasant for others.
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