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Brief report: Assessing dispositional optimism in adolescence - Factor structure and concurrent validity of the Life Orientation Test - Revised

  • Autori: Monzani D.; Steca P.; Greco A.
  • Anno di pubblicazione: 2014
  • Tipologia: Articolo in rivista
  • Parole Chiave: Confirmatory factor analysis; Dispositional optimism; Life Orientation Test - Revised; Validity
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Dispositional optimism is an individual difference promoting psychosocial adjustment and well-being during adolescence. Dispositional optimism was originally defined as a one-dimensional construct; however, empirical evidence suggests two correlated factors in the Life Orientation Test - Revised (LOT-R).The main aim of the study was to evaluate the dimensionality of the LOT-R. This study is the first attempt to identify the best factor structure, comparing congeneric, two correlated-factor, and two orthogonal-factor models in a sample of adolescents. Concurrent validity was also assessed.The results demonstrated the superior fit of the two orthogonal-factor model thus reconciling the one-dimensional definition of dispositional optimism with the bi-dimensionality of the LOT-R. Moreover, the results of correlational analyses proved the concurrent validity of this self-report measure: optimism is moderately related to indices of psychosocial adjustment and well-being.Thus, the LOT-R is a useful, valid, and reliable self-report measure to properly assess optimism in adolescence. © 2013 The Foundation for Professionals in Services for Adolescents.