Loneliness is a complex and deeply personal experience. Having reliable tools to measure how an individual’s experience of loneliness evolves over time is essential for understanding whether interventions designed to reduce it are effective. While several loneliness measures exist, they are not always designed to capture individual-level change in response to specific programmes or interventions.

To address this gap, Alma Economics was commissioned by the Department for Culture, Media and Sport (DCMS) to explore how loneliness can be more effectively measured over time. The project involved two main stages: a Rapid Evidence Assessment (REA) reviewing existing loneliness measures used in research and evaluation, and a series of focus groups and interviews with leading academics and practitioners to gather expert insights.

Drawing on this evidence, the study identified five potential approaches for a standardised framework to measure loneliness in intervention contexts across the UK. The findings suggest that the most promising routes forward are either to adapt and refine an existing validated scale—for example, by clarifying wording, expanding response options, or including questions on duration and intensity—or to develop a flexible “toolkit” approach, offering multiple validated items and guidance suited to different contexts.

Together, these approaches provide a foundation for developing a consistent framework to evaluate loneliness interventions across the UK, ultimately strengthening the evidence base for what works in tackling one of today’s most pressing social issues.

Read the full report here.