Department of Medical Psychology and Medical Sociology, University of Leipzig, Leipzig, Germany.
Rehabilitation Clinic Bad Oexen, Bad Oeynhausen, Germany.
Psychol Health. 2022 Jun;37(6):767-779. doi: 10.1080/08870446.2021.1892111. Epub 2021 Mar 23.
The aim of this study was to examine psychometric properties of the Life Orientation Test-Revised (LOT-R).
The LOT-R was administered in five clinical samples, three samples of the adult general population, and one sample of adolescents. Seven of the studies were performed in Germany and two in Colombia. All of the sample sizes were above 300.
Cronbach's alpha coefficients were between .57 and .75 for the eight adult samples, the correlations between the scales optimism and pessimism ranged from -.05 to -.37, and the coefficients of temporal stability (test-retest correlations) of the scales ranged from .43 to .69. There were no systematic age and gender effects observed in the nine studies. While the one-factor model of confirmatory factor analyses showed clearly insufficient fit indices among all of the samples, the two-factor model fit was markedly better.
The LOT-R proved to be a suitable instrument for measuring dispositional optimism in patients and in the general population, though the sum score should be viewed with caution. Studies comparing the LOT-R mean scores of different samples need not take age and gender distributions into account.
本研究旨在检验修订后的生活取向测验（LOT-R）的心理测量特性。
LOT-R 被用于五个临床样本，三个成人总体样本，以及一个青少年样本。其中有七个研究在德国进行，两个在哥伦比亚进行。所有样本量均大于 300。
八个成人样本的 Cronbach's alpha 系数在.57 到.75 之间，乐观和悲观两个分量表之间的相关性在-.05 到-.37 之间，分量表的时间稳定性（测试-重测相关）系数在.43 到.69 之间。在这九个研究中没有观察到年龄和性别方面的系统影响。虽然验证性因素分析的单因素模型在所有样本中显示出明显不足的拟合指数，但双因素模型的拟合明显更好。
LOT-R 被证明是一种适用于测量患者和普通人群中性格乐观的工具，尽管总和分数应谨慎看待。比较不同样本 LOT-R 平均分的研究无需考虑年龄和性别分布。
