Descriptive statistics of all study variables.

Psychopathy comprises antagonistic personality traits and antisocial behaviors that are associated with critical outcomes for the individual and society (e.g., violent behavior). Since its inception, impulsivity has been theorized as a core feature of psychopathy. Research supports this assertion, yet psychopathy and impulsivity are both multifaceted constructs. As such, the associations commonly observed between psychopathy and impulsivity may obscure more nuanced profiles of impulsivity that are only observable at the facet-level. To address this gap in the literature, we collected data from a community sample using a clinical psychopathy interview along with dispositional and neurobehavioral measures of impulsivity. We regressed each of the four facets of psychopathy onto eight impulsivity variables. We followed these analyses with bootstrapped dominance analyses in order to determine which of the impulsivity variables shared the most variance with each psychopathy facet. Our analyses revealed that positive urgency was the most important aspect of impulsivity to all four facets of psychopathy. We further identified distinct profiles of impulsivity linked to each psychopathy facet–the interpersonal facet was typified by sensation seeking and temporal impulsivity. The affective and lifestyle facets were both typified by general trait impulsivity and affective impulsivity. The antisocial facet was typified by affective impulsivity and sensation seeking. Such distinct profiles of impulsivity suggest that specific behaviors linked with each facet (e.g., manipulativeness and the interpersonal facet) may be explained in part by the distinct forms of impulsivity aligned with them.精神病态（psychopathy）包含与个体及社会的关键后果（如暴力行为）相关的敌对性人格特质与反社会行为。自该概念诞生以来，冲动性（impulsivity）就被理论化为精神病态的核心特征。既有研究支持这一论断，但精神病态与冲动性均属于多维度构念。因此，既往研究中观测到的精神病态与冲动性之间的普遍关联，可能掩盖了仅能在维度层面（facet-level）才可被观测到的、更为精细的冲动性特征谱。为填补该领域的研究空白，我们从社区样本中收集数据，采用临床精神病态访谈结合冲动性的特质性测评与神经行为学测评工具。我们将精神病态的四个维度分别对八个冲动性变量开展回归分析。在此基础上，我们进一步实施了自助法优势分析，以明确哪种冲动性变量可对每个精神病态维度解释最多的变异量。分析结果显示，积极紧迫性（positive urgency）是与精神病态四个维度均关联最为紧密的冲动性维度。我们还进一步明确了与各精神病态维度相关的独特冲动性特征谱：人际维度以感觉寻求与时间性冲动为典型特征；情感维度与生活方式维度均以总体特质性冲动及情感性冲动为典型特征；反社会维度则以情感性冲动与感觉寻求为典型特征。这类差异化的冲动性特征谱表明，与各精神病态维度相关的特定行为（如与人际维度相关的操控性），可部分通过与之匹配的特定冲动性形式得到解释。