2019 Volume 21 Issue 3 Pages 13-23
Does persons with auditory agnosia (persons with disabilities) correctly recognize the chime for alerting the emergency broadcast used in Japan? In order to understand impact caused by the chimes, I conducted two cycles of audiovisual experiments totally in which 78 persons with disabilities participate and 43 persons with non-disabled participate as controls. The subjects remembered the alphabet (A to E) and card symbols, and in the second experiment, they added mental arithmetic and subtraction devised to be one digit, in order to compare the attention power of each chime. There was no significant difference between the disabled and the non-disabled in the first experiment, but significant differences appeared in the second experiment. The differences between the middle-and-severely disabled and the non-disabled was remarkable. And after repeated experiment, the difference was less significant. When lightly loaded or repeated for persons with auditory agnosia, the current chimes are effective for them.
