A review has been produced regarding the effectiveness of reality orientation, skills training and mixed cognitive training interventions as potential interventions for slowing or reversing cognitive impairment for people living with dementia. It found inconsistent and inconclusive results (as so often is the case), so the authors recommend further research involving more easily comparable randomised controlled trials.
Carrion, C. Folkvord, F. [and] Anastasiadou, D. [et al] (2018). Cognitive therapy for dementia patients: a systematic review. Dementia and Geriatric Cognitive Disorders. 2018; 46(1-2): 1-26.
United States: National Academies of Sciences, Engineering, and Medicine
Ongoing considerations concerning the design of an ideal systematic review of evidence on effective care-related interventions for people with dementia and their caregivers; a contribution to the Agency for Healthcare Research and Quality (AHRQ).
Committee on Care Interventions for Individuals with Dementia and Their Caregivers, Board on Health Sciences Policy, Health and Medicine Division, National Academies of Sciences, Engineering, and Medicine (2018). Considerations for the design of a systematic review of care interventions for individuals with dementia and their caregivers: letter report. Washington (DC): National Academies Press (US); December 5th 2018.