Azevedo Jacinto Costa, Pais-Ribeiro José Luís, Coelho Rui, Figueiredo-Braga Margarida
Department of Neuroscience and Mental Health, Faculty of Medicine, University of Porto, Porto, Portugal.
I3S - Instituto de Investigação e Inovação em Saúde, Porto, Portugal.
Front Psychiatry. 2018 Feb 5;9:10. doi: 10.3389/fpsyt.2018.00010. eCollection 2018.
Aggression is one of the core symptoms of antisocial personality disorder (ASPD) with therapeutic and prognostic relevance. ASPD is highly prevalent among inmates, being responsible for adverse events and elevated direct and indirect economic costs for the criminal justice system. The Impulsive/Premeditated Aggression Scale (IPAS) is a self-report instrument that characterizes aggression as either predominately impulsive or premeditated. This study aims to determine the validity and reliability of the IPAS in a sample of Portuguese inmates. A total of 240 inmates were included in the study. A principal component factor analysis was performed so as to obtain the construct validity of the IPAS impulsive aggression (IA) and premeditated aggression (PM) subscales; internal consistency was determined by Cronbach's alpha coefficient; convergent and divergent validity of the subscales were determined analyzing correlations with the Barratt Impulsiveness scale, 11th version (BIS-11), and the Psychopathic Checklist Revised (PCL-R). The rotated matrix with two factors accounted for 49.9% of total variance. IA subscale had 11 items and PM subscale had 10 items. The IA and PM subscales had a good Cronbach's alpha values of 0.89 and 0.88, respectively. The IA subscale is correlated with BIS-11 attentional, motor, and non-planning impulsiveness dimensions ( < 0.05). The PM subscale is correlated with BIS-11 attentional, motor impulsiveness dimensions ( < 0.05). The PM subscale is correlated with PCL-R interpersonal, lifestyle, and antisocial dimensions ( < 0.05). The IA subscale is not correlated with PCL-R. The Portuguese translated version of IPAS has adequate psychometric properties, allowing the measurement of impulsive and premeditated dimensions of aggression.
攻击性是反社会人格障碍（ASPD）的核心症状之一，具有治疗和预后相关性。ASPD在囚犯中极为普遍，会导致不良事件，并使刑事司法系统的直接和间接经济成本升高。冲动/预谋攻击量表（IPAS）是一种自我报告工具，将攻击行为分为主要是冲动型或预谋型。本研究旨在确定IPAS在葡萄牙囚犯样本中的有效性和可靠性。共有240名囚犯纳入本研究。进行主成分因子分析以获得IPAS冲动攻击（IA）和预谋攻击（PM）分量表的结构效度；通过克朗巴哈α系数确定内部一致性；通过分析与第11版巴雷特冲动性量表（BIS-11）和修订版心理变态检查表（PCL-R）的相关性来确定分量表的收敛效度和区分效度。具有两个因子的旋转矩阵占总方差的49.9%。IA分量表有11个项目，PM分量表有10个项目。IA和PM分量表的克朗巴哈α值分别为0.89和0.88，表现良好。IA分量表与BIS-11的注意力、运动和非计划性冲动维度相关（<0.05）。PM分量表与BIS-11的注意力、运动冲动维度相关（<0.05）。PM分量表与PCL-R的人际、生活方式和反社会维度相关（<0.05）。IA分量表与PCL-R不相关。IPAS的葡萄牙语翻译版本具有足够的心理测量学特性，能够测量攻击行为的冲动和预谋维度。
