The study aimed to examine the effects of reminiscence therapy using nostalgic songs on the cognitive function of elderly people living in the community. The subjects were 34 people who had undergonea ssessment of their vital functions using a basic check list and stated that they had problems related to "withdrawal" or "cognitive functions". Their cognitive functions were assessed using the Hasegawa Dementia Scale-Revised (HDS-R) and Mini-Mental State Examination (MMSE) prior to and following the implementation of reminiscence intervention using nostalgic songs. The cognitive functions of the elderly were classified into three levels and assessed according to the judgment criteria of those scales. There were significant differences in the total HDS-R score and scores for the subscale items -"recital of numbers in reverse order" and "delayed recall"-received by all subjects. There were also significant differences in the total MMSE score and scores for the subscale items -"spatial orientation" and "delayed recall" -received by all subjects. Regarding cognitive function levels, there were significant differences in the total score and subscale score for "delayed recal" received by elderly people who had been determined as having "cognitive dysfunction" using the HDS-R and "mild cognitive dysfunction". That is, it is not possible to evaluate possible dementia, but there is a risk of transitioning to suspicion of dementia when it is left unattended, using the HDS-R and MMSE
