Browsing by Author "Pechorro, Pedro"

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    Examination of the SUPPS-P Impulsive Behavior Scale among Male and Female Youth: Psychometrics and Invariance
    (MDPI, 2021-04-07) Pechorro, Pedro; Revilla, Rebecca; Palma, Victor H.; Nunes, Cristina; Martins, Cátia; Cyders, Melissa A.; Psychology, School of Science
    The UPPS-P Impulsive Behavior Scale is one of the most used and easily administered self-report measures of impulsive traits. The main objective of this study was to examine the psychometric properties of the shorter SUPPS-P scale among a school sample of 470 youth (Mage = 15.89 years, SD = 1.00) from Portugal, subdivided into males (n = 257, Mage = 15.97 years, SD = 0.98) and females (n = 213, Mage = 15.79 years, SD = 1.03). Confirmatory factor analysis results revealed that the latent five-factor structure (i.e., Negative urgency, Lack of perseverance, Lack of premeditation, Sensation seeking, and Positive urgency) obtained adequate fit and strong measurement invariance demonstrated across sex. The SUPPS-P scale also demonstrated satisfactory psychometric properties in terms of internal consistency, discriminant and convergent (e.g., with measures of youth delinquency, aggression) validities, and criterion-related validity (e.g., with crime seriousness). Findings support the use of the SUPPS-P scale in youth. Given the importance of adolescence as a critical period characterized by increases in impulsive behaviors, having a short, valid, reliable, and easily administered assessment of impulsive tendencies is important and clinically impactful.
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    The Dickman Impulsivity Inventory: Validation and measurement invariance among Portuguese young adults
    (Public Library of Science, 2021-12-02) Pechorro, Pedro; Revilla, Rebecca; Resende, Miguel; Gonçalves, Rui Abrunhosa; Nunes, Cristina; Cyders, Melissa A.; Psychology, School of Science
    The Dickman Impulsivity Inventory (DII) measures impulsive personality related to both negative and positive behaviors and characteristics. The main aim of the present study was to examine the psychometric properties of the DII among a Southern-European sample of Portuguese young adults. Our convenience sample (N = 429, M = 22.11 years, SD = 3.35, range = 18-42), composed of women (n = 237, M = 22.08 years, SD = 3.35, age range = 18-42) and men (n = 192, M = 22.14 years, SD = 3.34, range = 18-35), was collected from a university context. The two-factor latent structure of the DII composed of functional and dysfunctional impulsivity was supported, although three items had to be removed due to low standardized loadings, and strong cross-gender measurement invariance was established. Our analyses of the DII also provided evidence of criterion-related validity, known-groups validity, and internal consistency/reliability. Our findings support the use of the DII among Portuguese young adults.
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    Weinberger Adjustment Inventory Portuguese Version: A Study of Cross-Cultural Adaptation and Measurement Invariance
    (Sage, 2024-04) Pechorro, Pedro; Shircliff, Katie; DeLisi, Matt; Simões, Mário R.; Cyders, Melissa A.; Psychology, School of Science
    We examine the psychometric properties of the Weinberger Adjustment Inventory (WAI) from a modern psychometric perspective, including second-order models, better estimation of reliability, and measurement invariance, among a sample of young adults (N = 610, M = 21.33 years, SD = 3.09 years) from Portugal. Results indicated that only the four-factor intercorrelated confirmatory models of the WAI Distress and Restraint scales, and the two-factor intercorrelated confirmatory models of the WAI Defensiveness scales showed adequate fits. The WAI showed good reliability and distinctive correlates with other psychometric measures and criterion variables. Cross-gender measurement invariance was established. Our findings support the WAI as a valid and reliable measure.