Abstract
To investigate the difference of recognition concerning developmental change and independence level by the age of subjects, three different aged groups were compared with fuzzy estimation methods. 120 young person subjects (18-22), 100 middle-aged (40-49) subjects, 100 elderly subjects (65+) were asked to evaluate 5 development estimation item groups to see to what degree 1-80 years old people would be able to perform independently and adequately. The subjects were also asked to evaluate independence level of 1-80 years old people and evaluate the degree of the relation between mean values of 5 item groups and the independence level in each age. Mean scores of 5 item groups (4 development evaluation items were included in each group) of 60 years old of the middle-aged and the elderly groups were higher than mean scores of the young person group. Possible reasons and influence of difference of three groups about recognition of functional changes and independence levels of each age were discussed.