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The main aim of the present study was to examine the psychometric properties of the Brief Self-Control Scale (BSCS) in a sample (N=412; M=13.19 years; SD=1.41) of Portuguese youths. Confirmatory Factor Analysis revealed that a refined two-factor structure was the best option, with cross-gender measurement invariance being demonstrated. The measure also demonstrated adequate psychometric properties, namely in terms of its reliability, discriminant validity, criterion-related validity, and known-groups validity. The findings mostly justify the use of this measure among Portuguese youths. [ABSTRACT FROM AUTHOR]

The development and validation of empirically sound measures that operationalize the Triarchic model of psychopathy among youth is currently in the nascent stage. The present study aimed to examine the psychometric properties of a brief refined measure of the Triarchic model of psychopathy based on the Youth Psychopathic Traits Inventory (YPI-Tri-S) among a mixed-gender school sample of 782 youth (M = 15.87 years, SD = 1.72) from Portugal. Confirmatory factor analysis offered support for the theoretically expected three-factor structure. Cross-gender measurement invariance using the present sample and cross-sample measurement invariance of the YPI-Tri-S using a previously collected forensic sample of institutionalized males was established. The YPI-Tri-S showed adequate psychometric properties in terms of discriminant validity, convergent validity, concurrent criterion-related validity, known-groups validity, and internal consistency. Findings indicate that YPI-Tri-S is a valuable brief and psychometrically reliable and valid self-report measure of the Triarchic model of psychopathy for use in diverse samples of youth. [ABSTRACT FROM AUTHOR]

The main aim of the present study was to validate the Socially Desirable Response Set -5 (SDRS-5) among a school sample (N=543) of male and female Portuguese youths. The SDRS-5 demonstrated good results, namely in terms of its one-factor structure, internal consistency, convergent validity, discriminant validity, criterion-related validityand known-groups validity. Cross-gender measurement invariance was demonstrated. The psychometric properties that were found mostly justify the use of the SDRS-5 among Portuguese adolescents from a school context. [ABSTRACT FROM AUTHOR]