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- Short Form of the Social Anxiety Scale for Adolescents among community and institutionalized Portuguese youthsPublication . Nunes, Cristina; Ayala-Nunes, Lara; Pechorro, Pedro; Greca, Annette M. LaBackground/Objective: Social anxiety is a common issue arising in adolescence that can cause significant impairment and have detrimental consequences for development in the absence of treatment. In this study we examined the factor structure and the psychometric properties of a 12-item short form of the Portuguese-Language Social Anxiety Scale for Adolescents (SAS-A-SF). Method: A community adolescent sample (N = 835) and a young offender sample (N = 244) completed the SAS-A, the Basic Empathy Scale and the Reactive-Proactive Aggression Questionnaire. Confirmatory factor analysis, internal consistency, cross gender and cross sample invariance, convergent and discriminant validity of the SAS-A-SF were analyzed. Results: The confirmatory factor analysis revealed that the 3-factor second-order model obtained the best fit. The results provided evidence that the SAS-A-SF is a psychometrically sound instrument that shows measurement invariance across genders and across samples, good reliability and positive correlations with empathy. Conclusions: The Portuguese version of SAS-A-SF is a useful, time-efficient tool for both researchers and practitioners who need to assess social anxiety, a relevant construct in adolescent psychopathology. (C) 2018 Asociacion Espanola de Psicologia Conductual. Published by Elsevier Espana, S.L.U.
- Psychopathy and behavior problems: a comparison of incarcerated male and female juvenile delinquentsPublication . Pechorro, Pedro Santos; Vieira, Duarte Nuno; Poiares, Carlos Alberto; Vieira, Rui Xavier; Maroco, Joao; Neves de Jesus, Saul; Nunes, CristinaThe objective of the present study was to compare incarcerated male and female juvenile offenders regarding psychopathic traits, behavior problems, psychopathy taxon, conduct disorder, self-reported delinquent behavior, and crime seriousness. Within a total forensic sample of 261 detainee participants, subdivided in a male group (n = 217) and a female group (n = 44), statistically significant differences were found. Female juvenile offenders show less callous-unemotional traits, more emotional symptoms, more prosocial behaviors, less self-reported delinquent behavior, and lower crime seriousness. Conduct disorder prevalence was very high, but no statistically significant gender differences were found. The predictive importance of psychopathic traits, behavior problems, psychopathy taxon, and conduct disorder for the prediction of group membership (female versus male) was established by binary logistic regression. (C) 2012 Elsevier Ltd. All rights reserved.
- Validation study of the Narcissistic Personality Inventory-13 among a school sample of Portuguese youthsPublication . Pechorro, Pedro; Nunes, Cristina; Goncalves, Rui Abrunhosa; Simoes, Mario R.; Oliveira, Joao PedroThe main aim of the present study was to translate and validate the Narcissistic Personality Inventory-13 (NPI-13) among a school sample (N=543) of male and female Portuguese youths. The NPI-13 demonstrated good psychometric properties, namely in terms of its three-factor structure, internal consistency, convergent validity, discriminant validity and criterion-related validity. Positive correlations were found with Conduct Disorder symptoms, alcohol use, drug use and unprotected sex. The psychometric properties of the NPI-13 mostly justify its use among Portuguese adolescents in a school context.
- Propensity to morally disengage scale: psychometric properties and measurement invariance among a portuguese samplePublication . Pechorro, Pedro; Bonfá-Araujo, Bruno; Simões, Mário R.; Nunes, Cristina; DeLisi, MattThe propensity to morally disengage can be an essential driver of unethical, antisocial, and criminal behavior. The present study examines the psychometric properties of the Propensity to Morally Disengage Scale (PMDS) among a convenience sample of 242 male and female participants (M = 30.19 years, SD = 12.78, range = 16-77) from Portugal. The expected one-factor structure obtained an adequate fit using confirmatory factor analysis. Internal consistency/reliability was adequate as measured by the alpha and omega coefficients. Convergent validity (i.e. with dark traits, low self-control, violence evaluation, and antisociality/criminality tendencies measures), divergent validity (i.e. with basic empathy and light traits of personality measures), and criterion-related validity (e.g. with trouble with the law, arrested by police, sentenced to prison variables) were demonstrated with Pearson and point-biserial correlations. Measurement invariance across gender was established. Significant gender differences in the PMDS scores were found, with males scoring significantly higher than females. Our findings support using the PMDS Portuguese version as a short, valid, and reliable measure of moral disengagement.
- The Short Dark Triad (SD3): adaptation and psychometrics among at-risk Male and female youthsPublication . Pechorro, Pedro; Caramelo, Vanessa; Oliveira, Joao Pedro; Nunes, Cristina; Curtis, Shelby R.; Jones, Daniel N.The dark triad is a term used to describe a constellation of three socially harmful personality traits: Machiavellianism, psychopathy, and narcissism. The main aim of the present study was to examine the psychometric properties of the Short Dark Triad (SD3) scale, a brief measure of the dark triad, among a sample (N=412) of male (n=200) and female (n=212) at-risk Portuguese youths. Confirmatory factor analysis revealed the three-factor structure of the SD3 obtained an adequate fit, and measurement invariance across gender was demonstrated, although two items per dimension had to be removed. The Portuguese version of the SD3 scale demonstrated satisfactory psychometric properties, specifically the properties of internal consistency, convergent validity, discriminant validity, and known-groups validity, which overall justifies its use among this population. Findings are discussed in terms of the use of the SD3 scale with male and female at-risk youths.