Background: Loneliness is a transdiagnostic clinical phenomenon that can significantly impact mental health and wellbeing across the lifespan.Objective: The aim was to combine existing theory and evidence-based treatment approaches to propose a comprehensive transdiagnostic cognitive behavioural analysis of the maintenance of chronic loneliness relevant across disorders, age groups and populations.
Method:A distillation and matching model-framework approach was taken to identify interventions designed to reduce loneliness. Eligible studies were coded for the presence of practice elements. The findings were combined with an analysis of the broader literature on loneliness and psychopathology to derive a comprehensive cognitive behavioural analysis of the maintenance of loneliness over time across populations. Results: The search yielded 11 studies containing 14 practice elements with relative frequencies ranging from 7% to 64 %. The identified practice elements target putative mechanisms such as negative interpersonal appraisals, anxiety and social skills deficits. Counter-productive behaviour and cognitive processes such as self-focused attention were identified as maintenance factors based on the broader literature. A modular transdiagnostic model with multiple pathways is proposed to be consistent with the existing theoretical and treatment literature. Conclusions: Combining the distillation and matching model-framework with existing theory from the literature is a novel approach for developing a model of factors that maintain loneliness over time. The model has varying treatment implications for different populations including children with autism spectrum disorders and bereaved older adults. Targeting COMMON ELEMENTS APPROACH TO LONELINESS 3 transdiagnostic processes has the potential to transform interventions for loneliness across a range of formats and settings.
What is the public health significance of this article?The systematic review and distillation procedure show that loneliness has been addressed with a wide range of techniques and strategies in efficacious interventions, with the most frequent ones targeting the participant's social skills. Additionally, the derived model generates potential ways of developing interventions for populations where loneliness is of concern.