Browsing by Author "Pechorro, Pedro"

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    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.
  • Thumbnail Image
    Item
    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.