On the relationship between the social brain, social connectedness, and wellbeing

Evaluating the cognitive effects of interventions to reduce social isolation and loneliness in older adults: a systematic review

OBJECTIVES

Social isolation and loneliness among older adults present serious public health challenges linked to increased dementia risk. This systematic review analyzes interventions addressing social isolation and loneliness in older adults and their cognitive effects to inform future dementia prevention programs.

METHOD

We systematically searched databases (PUBMED, PsycINFO, SCOPUS, EBSCO, and SAGE Journals) from February to May 2023 and updated from August to November 2023 using terms like social isolation, loneliness, intervention, and cognitive outcome. We included studies that assessed cognitive outcomes (such as global cognition or specific domains) and non-cognitive outcomes (including depression, well-being, and functionality). Study quality was assessed using Cochrane's RoB 2, ROBINS-I, and other appraisal tools, with results synthesized narratively.

RESULTS

Nine studies (1025 participants) were included, with a high risk of bias in most randomized trials (except one) and a low-to-moderate risk in non-randomized studies. Six studies showed improved cognitive function post-intervention, five of which involved technology. Two studies demonstrated reduced loneliness and improved cognition.

CONCLUSION

Technological interventions promise to reduce social isolation and loneliness, positively impacting cognitive function. Despite this, these interventions did not directly impact social isolation, which requires future and larger studies to understand more in-depth the role of these approaches for individuals with social isolation. The interventions promoting social interactions could lead to higher social identification, well-being, and interest in life. Multidomain interventions, including technology, are effective. Limitations include study scarcity and heterogeneity, highlighting the need for more robust research on interventions to alleviate social isolation and loneliness and enhance cognitive function.Systematic Review Registration PROSPERO CRD42023460933.

Attachment to robots and therapeutic efficiency in mental health

Previous studies in the mental health context have demonstrated that interactions with social robots can improve the mood and cognitive capacities of their users, and enhance their quality of life. In this Perspective article, our goal is to systematize the possible roles of social robots and to point out that different roles require different levels of attachment. We argue that the attachment between the client and the (robot) therapist is a fundamental ingredient of any helping relationship and that the full potential of using social robots in mental health settings can only be realized if the strength of attachment is appropriately correlated with the type of relationship established.

Characterizing the mechanisms of social connection

Understanding how individuals form and maintain strong social networks has emerged as a significant public health priority as a result of the increased focus on the epidemic of loneliness and the myriad protective benefits conferred by social connection. In this review, we highlight the psychological and neural mechanisms that enable us to connect with others, which in turn help buffer against the consequences of stress and isolation. Central to this process is the experience of rewards derived from positive social interactions, which encourage the sharing of perspectives and preferences that unite individuals. Sharing affective states with others helps us to align our understanding of the world with another's, thereby continuing to reinforce bonds and strengthen relationships. These psychological processes depend on neural systems supporting reward and social cognitive function. Lastly, we also consider limitations associated with pursuing healthy social connections and outline potential avenues of future research.