Willemsen Jochem, Dula Chris S, Declercq Frédéric, Verhaeghe Paul
Department of Psychoanalysis and Clinical Consulting at University Ghent, Ghent, Belgium.
Accid Anal Prev. 2008 Mar;40(2):798-806. doi: 10.1016/j.aap.2007.09.019. Epub 2007 Oct 8.
The aim of this study is to further establish the validity and reliability of the Dula Dangerous Driving Index (DDDI). The reliability and validity of the instrument was investigated by comparing data from a US university sample, a US community sample, and a sample of Belgian traffic offenders. Exploratory and confirmatory factor analysis supported the presence of a four-factor structure with items for Drunk Driving forming a separate scale apart from items for Risky Driving, Negative Cognitive/Emotional Driving and Aggressive Driving. A multi-group confirmatory factor analysis with model constraints supported the validity of the DDDI. Inter-correlations revealed that the DDDI subscales are closely interrelated and uni-dimensionality of the measure was found in all three samples. This suggests the DDDI Total score can be used as a composite measure for dangerous driving. However, the validity of the subscales was demonstrated in the Belgian sample, as specific traffic offender groups (convicted for drunk driving, aggressive driving, speeding) scored higher on corresponding scales (Drunk Driving, Aggressive Driving, and Risky Driving, respectively), indicating that it is clinically meaningful to differentiate the subscales.
本研究的目的是进一步确立杜拉危险驾驶指数（DDDI）的有效性和可靠性。通过比较来自美国大学样本、美国社区样本和比利时交通违法者样本的数据，对该工具的可靠性和有效性进行了调查。探索性和验证性因素分析支持存在一个四因素结构，其中酒驾项目形成了一个独立于危险驾驶、消极认知/情绪驾驶和攻击性驾驶项目的量表。具有模型约束的多组验证性因素分析支持了DDDI的有效性。相互关联表明，DDDI分量表密切相关，并且在所有三个样本中都发现该测量具有单维性。这表明DDDI总分可作为危险驾驶的综合测量指标。然而，分量表的有效性在比利时样本中得到了证明，因为特定的交通违法者群体（因酒驾、攻击性驾驶、超速被定罪）在相应量表（分别为酒驾、攻击性驾驶和危险驾驶）上得分更高，这表明区分分量表在临床上具有意义。
