UCLA Loneliness Scale Scoring · 20-Item v3 (Russell 1996)
The UCLA Loneliness Scale (Version 3) is a 20-item self-report questionnaire that measures subjective loneliness, the perceived quality of a person's social connections (Russell, 1996). Items are rated 1–4 and summed to a total of 20–80, with higher scores meaning greater loneliness; there is no validated diagnostic cutoff.
The UCLA Loneliness Scale (v3) is a 20-item validated measure of subjective loneliness and social isolation. One of the most widely used loneliness measures in psychological research, with applications in clinical settings to screen for social disconnection and its health consequences.
What the UCLA Loneliness Scale measures
The UCLA Loneliness Scale was originally developed by Daniel Russell, Letitia Anne Peplau, and M. L. Ferguson in 1978 and refined through multiple versions. The current Version 3 (Russell, 1996) is the most widely used version, with high internal consistency (α = .89–.94) and strong validity across diverse populations. It measures subjective loneliness, the perceived quality of social connections, rather than objective social isolation.
Each of the 20 items asks how often the respondent experiences a feeling related to social connectedness, rated on a 4-point scale: Never (1), Rarely (2), Sometimes (3), Always (4). Nine items use positive wording (e.g., "feeling in tune with others") and are reverse-scored before summing. Higher scores indicate greater loneliness.
Loneliness is increasingly recognized as a public health concern with health effects comparable to smoking 15 cigarettes per day (Holt-Lunstad et al., 2015). It is associated with depression, anxiety, sleep disorders, cognitive decline, and increased mortality. Russell's UCLA lab states that students and researchers may use the UCLA Loneliness Scale without permission for non-profit research. Check the copyright holder's terms before clinical or commercial use.
How to administer the UCLA Loneliness Scale
The scale is self-administered: respondents rate how often they experience each of the 20 feelings, without clinician involvement, which makes it suitable for routine screening in research and clinical settings.
Rate how often you feel each way. Think about how you generally feel, not just right now.
Educational reference only. Cannot diagnose or replace clinical evaluation.
UCLA Loneliness Scale scoring and interpretation
Russell (1996). Each of the 20 items is rated 1 (Never) to 4 (Always); nine positively worded items (1, 5, 6, 9, 10, 15, 16, 19, 20) are reverse-scored before all items are summed, giving a total from 20 to 80. Higher totals reflect greater subjective loneliness.
There is no single validated diagnostic cutoff for the UCLA Loneliness Scale. The ranges below are illustrative bands across the 20–80 scale, not thresholds from a validation study; a 2024 head-to-head study (Gosling et al.) found prevalence estimates varied substantially depending on the threshold applied. Scores are best read against the relevant normative sample and against the individual's own trend over time, not as a diagnosis.
| Total score | Illustrative range |
|---|---|
| 20–34 | Low loneliness |
| 35–49 | Moderate loneliness |
| 50–64 | Moderately high loneliness |
| 65–80 | High loneliness |
Psychometric properties
- Original scale (Russell, Peplau & Ferguson, 1978): The 20-item scale had high internal consistency (alpha = .96) and a two-month test-retest correlation of .73, with concurrent validity shown by correlations with self-reported loneliness and related emotional states.
- Version 3 (Russell, 1996): Across samples of college students, nurses, teachers and older adults, internal consistency ranged from .89 to .94 and one-year test-retest reliability was r = .73. The scale correlated with other loneliness measures and with measures of relationship adequacy, health and well-being. Confirmatory factor analysis supported a global loneliness factor plus two method factors reflecting item wording direction.
- 20-item vs 3-item (Gosling et al., 2024): In 1,742 midwifery students, the 20-item and 3-item versions were strongly associated and had similar reliability and validity as dimensional scores, but the prevalence of loneliness varied strikingly depending on the cutoff used.
Limitations
- Not a diagnosis. Loneliness is not a diagnosis; the scale quantifies perceived social connection.
- No validated cutoff. The score ranges on this page are illustrative; prevalence estimates change substantially with the threshold chosen.
- Self-report. Scores reflect the respondent's own perception at the time of rating.
- Wording effects. Positively and negatively worded items form separate method factors, so careful reverse-scoring is essential.
Loneliness and mood in HiBoop
HiBoop does not offer the UCLA Loneliness Scale; this page is reference material. For mood and anxiety, HiBoop offers the PHQ-9 and GAD-7, with automated scoring and tracking over time.
HiBoop does not offer this scale. This page is reference material.This library is an academic and clinical reference. A scale described here is not necessarily offered in HiBoop; each page says whether it is.
Frequently Asked Questions
What does a high UCLA Loneliness Scale score mean?
Higher total scores (toward the maximum of 80) indicate greater subjective loneliness. There is no single validated diagnostic cutoff; scores are typically interpreted relative to normative sample distributions, and a 2024 head-to-head psychometric study found that prevalence estimates varied substantially depending on which threshold was applied. A clinician should consider score trends over time alongside clinical context.
Is the UCLA Loneliness Scale self-report or clinician-administered?
The UCLA Loneliness Scale is a self-report questionnaire. Respondents rate each of the 20 items on a 4-point frequency scale (Never to Always) without clinician involvement, making it suitable for routine screening in a variety of research and clinical settings.
Can the UCLA Loneliness Scale diagnose loneliness or a mental health condition?
No. The scale quantifies the perceived quality of social connections but cannot provide a diagnosis of loneliness or any mental health condition. Elevated scores indicate clinically meaningful social disconnection warranting further evaluation, not a formal clinical diagnosis.
How is the UCLA Loneliness Scale scored?
Each item is rated 1 (Never) to 4 (Always). Nine positively worded items (items 1, 5, 6, 9, 10, 15, 16, 19, and 20) are reverse-scored so that higher values consistently reflect greater loneliness. All 20 item scores are then summed; total scores range from 20 to 80.
Bill this assessment
In the US, the UCLA Loneliness Scale Scoring · 20-Item v3 (Russell 1996) is usually billed under these CPT codes. Payer rules vary.
Measurement-based care in practice
For clinicians
HiBoop does not offer this scale. For the scales it does offer, HiBoop automates delivery, scoring and longitudinal tracking across your patient panel.
For individuals
This page is a clinical reference, not a diagnostic tool. If you have concerns about your own symptoms, bring this information to a qualified mental health professional.
References
- 1.Russell D, Peplau LA, Ferguson ML. Developing a measure of loneliness. J Pers Assess. 1978;42(3):290-4.View source
- 2.Russell DW. UCLA Loneliness Scale (Version 3): reliability, validity, and factor structure. J Pers Assess. 1996;66(1):20-40.View source
- 3.Gosling CJ, Colle R, Cartigny A, et al. Measuring loneliness: a head-to-head psychometric comparison of the 3- and 20-item UCLA Loneliness Scales. Psychol Med. 2024;54(14):3821-3827.View source
Last reviewed: Jun 3, 2026
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