Construct Validity of the Acquired Capability for Suicide Scale: Factor Structure, Convergent and Discriminant Validity
Construct Validity of the Acquired Capability for Suicide Scale: Factor Structure, Convergent and Discriminant Validity
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自杀能力量表的构建效度：因子结构、收敛效度和判别效度
DOI：
10.1007/s10862-016-9576-4
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发表时间：
2017
影响因子：
1.6
通讯作者：
D. de Leo
中科院分区：
文献类型：
--
作者：
Jurgita Rimkevičienė;Jacinta Hawgood;J. O'Gorman;D. de Leo
自杀获得能力量表（ACSS）评估人际自杀理论的三个主要结构之一，但其有效性证据有限。在两项研究中（n = 287和738），从因素结构和与自述自杀行为和自残指数的关系方面检验了完整的20项ACSS及其简短版本（ACSS-5、ACSS-8、ACSS- fad）的效度。验证性因子分析（CFA）在不同版本的ACSS的一、二或三因素模型中未能显示出良好的拟合。在第一项研究中，20项量表的探索性因子分析指向一个五因素结构，在第二项研究中使用CFA来支持这一点。在这两项研究中，所有的量表版本都显示出对死亡的恐惧和死亡的中度负相关，表明量表在评估对死亡的恐惧感方面的有效性。在第二项研究中，我们发现以这五个因素作为能力潜变量的指标的模型可以预测自杀行为所表示的自杀倾向潜变量，但在模型中加入项目20后，预测能力得到了显著增强。在第一项研究中也发现，这一项比完整的ACSS或其任何简短版本更能预测自杀和自残行为。
The Acquired Capability for Suicide Scale (ACSS) assesses one of three main constructs in the Interpersonal Theory of Suicide but evidence of its validity is limited. In two studies (Ns = 287 and 738) validity of the full 20-item ACSS and its shorter versions (ACSS-5, ACSS-8, ACSS-FAD) were examined in terms of factor structure and relation to indices of self-reported suicidal behaviour and self-harm. Confirmatory factor analysis (CFA) failed to show good fit for one-, two-, or three-factor models of the ACSS in its various versions. Exploratory factor analysis of the 20-item scale in the first study pointed instead to a five-factor structure and this was supported using CFA in the second study. In both studies all scale versions showed moderate negative correlations to fear of death and dying, indicating scale validity for the purpose of assessing fearlessness about death. In the second study, a model in which the five factors were indicators of a latent variable of Capability was found to predict a latent variable of Suicidality as indicated by suicidal behaviours, but the prediction was substantially enhanced by the addition of Item 20 to the model. This single item was also found in the first study to better predict suicidal and self-harming behaviour than the full ACSS or any of its short versions.