Reliability and validity of the Danish version of the UCLA Loneliness Scale

The objective of this study was to examine the psychometric properties of a Danish version of the UCLA Loneliness Scale (UCLA). The 20-item scale was completed along with other measures in a national youth probability sample of 379 8th grade students aged 13–17. The scale showed high internal consistency, and correlations between UCLA and measures of emotional loneliness, social loneliness, self-esteem, depression, extraversion, and neuroticism supported the convergent and discriminant validity of the scale. Exploratory factor analysis supported a unidimensional structure of the measure. The results, highly comparable to the original version of the scale, indicate that the Danish version of UCLA is a reliable and valid measure of loneliness.