Pompeia Sabine, Inacio Luanna Maristella, de Freitas Rafaella Sales, Zanini Gislaine Valverde, Malloy-Diniz Leandro, Cogo-Moreira Hugo
Departamento de Psicobiologia, Universidade Federal de São Paulo, São Paulo, Brazil.
Departamento de Saúde Mental, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
Front Psychol. 2018 Jun 27;9:1059. doi: 10.3389/fpsyg.2018.01059. eCollection 2018.
Five different facets or domains of impulsivity (lack of Perseverance, lack of Premeditation, Sensation Seeking, Positive and Negative Urgency) have been detected in undergraduate students by means of a short, 20-item version of the Impulsive Behavior Scale UPPS-P. The present cross-sectional study examined the psychometric properties of a Brazilian version of this short scale (SUPPS-P) in a non-clinical sample of 510 individuals with a larger age range (10-72 years) and from varying socioeconomic strata (SES). We also investigated: (a) differential item functioning according to age, sex and socioeconomic status; (b) whether these demographic factors affected participants' responses (population heterogeneity); and (c) if using scores directly derived from respondents' answers (raw scores) reflected the 5 distinguishable impulsiveness domains out of the structural equation modeling environment (bifactor model). We showed that the short UPPS-P version replicated factor structures, internal consistency across domains and inter-scale correlations found in prior studies, and confirmed the psychometric separability of the 5 impulsiveness domains. Only three out of the 20 items showed differential item functioning. Higher Positive and Negative Urgency and lack of Premeditation were reported by men and impulsiveness decreases with age in all domains except lack of Premeditation. SES did not influence results. The viability of using raw scores to assess the five domains was not confirmed via bifactor modeling. The use of a general composite score was psychometrically acceptable. We conclude that, in the structural equation modeling environment, the SUPPS-P is a reliable instrument to assess multiple impulsivity domains in non-clinical community samples in different cultural settings. However, out of this statistical environment, viability was only found for a general factor of impulsivity.
通过一个简短的、包含20个条目的冲动行为量表UPPS-P，在本科生中检测到了冲动性的五个不同方面或维度（缺乏毅力、缺乏预谋、寻求刺激、积极和消极紧迫感）。本横断面研究在一个年龄范围更广（10 - 72岁）且来自不同社会经济阶层（SES）的510名非临床个体样本中，检验了该简短量表巴西版（SUPPS-P）的心理测量特性。我们还研究了：（a）根据年龄、性别和社会经济地位的项目功能差异；（b）这些人口统计学因素是否影响参与者的回答（总体异质性）；以及（c）直接使用受访者答案得出的分数（原始分数）在结构方程建模环境（双因素模型）之外是否反映了5个可区分的冲动性维度。我们发现，简短的UPPS-P版本复制了先前研究中发现的心因结构、各维度的内部一致性以及量表间的相关性，并证实了5个冲动性维度的心理测量可分离性。20个条目中只有3个显示出项目功能差异。男性报告的积极和消极紧迫感以及缺乏预谋程度更高，除缺乏预谋外，所有维度的冲动性都随年龄增长而降低。社会经济地位不影响结果。通过双因素建模未证实使用原始分数评估这五个维度的可行性。使用一般综合分数在心理测量学上是可以接受的。我们得出结论，在结构方程建模环境中，SUPPS-P是评估不同文化背景下非临床社区样本中多个冲动性维度的可靠工具。然而，在这种统计环境之外，仅发现冲动性的一般因素具有可行性。
