The Mediating Role of Positive Orientation in the Relationship between Loneliness and Meaning in Life

(1) Background: Previous research revealed that increased loneliness resulted in decreased meaning in life (MIL). Little is known, however, about the underlying mechanisms of this relationship. The aim of the study was to determine if the set of positive evaluations of oneself, one’s life, and one’s future discussed by Caprara as positive orientation (POS) was a mediator between loneliness and MIL. (2) Methods: A sample of 304 Polish participants aged 19–45 (M = 25.61 years, SD = 6.1) completed the De Jong Gierveld Loneliness Scale, the Presence subscale of the Meaning in Life Questionnaire, and the Positivity Scale. (3) Results: The study showed that loneliness was negatively associated with POS and MIL, while POS and MIL were positively correlated with each other. It also turned out that POS partially mediated the relationship between loneliness and MIL. (4) Conclusions: The results suggest that, by inhibiting POS, loneliness makes it difficult to perceive life as meaningful. The interrelationships between loneliness, POS, and MIL are discussed in light of the evolutionary theory of loneliness.