UCLA-LS-4 by Russell et al. (1980).

Indicate how often you feel the way described in each of the following statements. Circle one number for each.
	Never	Rarely	Sometimes	Often
1. I feel in tune with the people around me. a	1	2	3	4
2. No one really knows me well.	1	2	3	4
3. I can find companionship when I want it. a	1	2	3	4
4. People are around me but not with me.	1	2	3	4

Note. UCLA-LS-4 = University of California Los Angeles, Loneliness Scale-4-item measures.

^aReverse-scored items. Scores are summed, with higher scores reflecting higher levels of loneliness.