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Tsaousis, Ioannis; Sideridis, Georgios D.; Alahmadi, Maisaa Taleb S. – Journal of Psychoeducational Assessment, 2021
Positive youth development has gained a lot of attention recently since it acts as a protective factor for several risk behaviors and other important life outcomes in adolescents and young adults. The main objective of this study was to explore the factorial structure of the Positive Youth Development Scale (PYDS) using multidimensional item…
Descriptors: Item Response Theory, Measures (Individuals), Adolescents, Young Adults

Marsh, Herbert W. – Journal of Educational Psychology, 1989
This analysis of 12,266 responses to the 3 Self-Description Questionnaires (which measure dimensions of self-concept in preadolescence) examined age and sex effects during preadolescence and early adulthood and alternative operationalizations of the proposition that self-concept becomes more differentiated with age. Well-defined factor structures…
Descriptors: Adolescent Development, Adolescents, Age Differences, Comparative Testing