The project presented here respond to this emerging need by implementing a Reminiscence Therapy program dedicated to elderly people in an institutional context. This will be a multicenter, randomized controlled study in which the participants' allocation will be made without their knowledge. Before the randomization process, the screening evaluation will be done, which will allow to verify the presence of the inclusion and exclusion criteria. The target population will be people age 65 or above years who present cognitive decline. After the randomization process, participants will be allocated randomly in the experimental group where the reminiscence program (composed by a main strand and maintenance strand) or in the usual institutional care group. The evaluation of the participants will be carried out individually and will take place in four different moments.This study will be conducted in RSE in the central region of Portugal.