Psychometric Properties of the Greek Version of the Relational Provisions Loneliness Questionnaire (RPLQ) in Early Adolescents

BackgroundLoneliness during adolescence has increased worldwide in recent years and has been consistently associated with a broad range of adverse psychosocial outcomes. The availability of valid and reliable measures is essential for the early identification of loneliness and for the rigorous evaluation of intervention effectiveness. Nevertheless, multidimensional, psychometrically validated instruments for assessing loneliness in Greek adolescents remain limited.ObjectiveThe aim of the present study was to examine the psychometric properties of the Greek version of the Relational Provisions Loneliness Questionnaire (RPLQ; Hayden-Thomson, 1989), which assesses social and emotional dimensions of loneliness (i.e., integration and intimacy) within family and peer relationships.MethodsThe sample consisted of 503 students aged 13-14 years, recruited from secondary schools through stratified random sampling. The factor structure was tested via Confirmatory Factor Analysis, while internal consistency, validity evidence, and measurement invariance across gender were examined.ResultsThe four-factor model demonstrated the best fit (CFI = .997, TLI = .997, RMSEA = .032, SRMR = .050) and yielded high standardized factor loadings (λ = .63-.93). Internal consistency was high across all dimensions (ω = .87-.92), and convergent, discriminant, and concurrent validity were supported. Measurement invariance across gender was supported at the configural, metric, and scalar (threshold) levels.ConclusionsThe Greek version of the RPLQ is a valid and reliable instrument for the multidimensional assessment of adolescent loneliness, supporting its use in research and prevention efforts.