Background This updated Cochrane Review of reminiscence therapy (RT) for dementia was first published in 1998, and last updated in 2005. RT involves the discussion of memories and past experiences with other people using tangible prompts such as photographs or music to evoke memories and stimulate conversation. RT is implemented widely in a range of settings using a variety of formats. Objectives To assess the effects of RT on people living with dementia and their carers, taking into account differences in its implementation, including setting (care home, community) and modality (group, individual). Search methods We searched ALOIS (the Cochrane Dementia and Cognitive Improvement Group's Specialized Register) on 6 April 2017 using the search term 'reminiscence.' Selection criteria We included all randomised controlled trials of RT for dementia in which the duration of the intervention was at least four weeks (or six sessions) and that had a 'no treatment' or passive control group. Outcomes of interest were quality of life (QoL), cognition, communication, behaviour, mood and carer outcomes. Data collection and analysis Two authors (LOP and EF) independently extracted data and assessed risk of bias. Where necessary, we contacted study authors for additional information. We pooled data from all sufficiently similar studies reporting on each outcome. We undertook subgroup analysis by setting (community versus care home) and by modality (individual versus group). We used GRADE methods to assess the overall quality of evidence for each outcome. Main results We included 22 studies involving 1972 people with dementia. Meta-analyses included data from 16 studies (1749 participants). Apart from six studies with risk of selection bias, the overall risk of bias in the studies was low. Overall, moderate quality evidence indicated RT did not have an important effect on QoL immediately after the intervention period compared with no treatment (standardised mean difference (SMD) 0.11, 95% confidence interval (CI)-0.12 to 0.33; I 2 = 59%; 8

Reminiscence therapy (RT) is a popular psychosocial intervention widely used in dementia care. It involves discussion of past events and experiences, using tangible prompts to evoke memories or stimulate conversation. Areas covered: The aim of this review is to evaluate the effectiveness of RT for people with dementia. It includes studies from the specialized register of the Cochrane Dementia and Cognitive Improvement Group (ALOIS). Searches yielded 185 records of which 22 (n = 1972) were eligible for inclusion. The meta-analysis comprised of data from 16 studies (n = 1749 participants). The review included four large multicenter high-quality studies and several smaller studies of reasonable quality. Outcomes of interest were quality of life, communication, depression, and cognition at posttreatment and later follow-up. Expert commentary: RT has the potential to improve psychosocial outcomes for people with dementia. Effects are small and can be inconsistent, varying across intervention modality and setting. Individual approaches were associated with improved cognition and mood. Group approaches were linked to improved communication. The impact on quality of life appeared most promising in care home settings. Diversity in reminiscence approaches makes it difficult to compare them, and the field would benefit from the development, evaluation, use, and sharing of standardized approaches.