The UCLA Loneliness Scale (Version 3) is a self-report measure used to assess subjective feelings of loneliness and perceived social isolation. It is typically administered in clinical and research contexts to support screening and outcome monitoring related to social connectedness.
The instrument consists of 20 items and usually takes about 4 minutes to complete. Respondents rate statements describing social relationships and feelings of belonging, allowing clinicians and researchers to quantify perceived loneliness and track change over time.
The UCLA Loneliness Scale (Version 3) is commonly cited in the literature as developed by Daniel W. Russell and Mary E. Ferguson. Scores are interpreted as an index of perceived loneliness rather than an objective measure of social network size or actual social contact.