抄録
The importance of prevention of dementia is a crucial issue in this aging society. We propose co-imagination method for prevention of dementia. Co-imagination method aims to activate three cognitive functions: episode memory, segmentation of attention, and planning function, which decline at early stage of dementia. Participants of the co-imagination program bring images which represent episode memory and communicate with them. We analyzed the relationship between the topic of sessions and the frequency of comments by self and others.