Abstract

Objective

The aim of this study was to examine psychometric properties of the Life Orientation Test-Revised (LOT-R).

Design and main outcome measures

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.

Results

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.

Conclusions

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.

中文翻译：

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生活取向测试修订版 (LOT-R) 的心理测量评估，基于九个样本

摘要

客观的

本研究的目的是检查生活取向测试修订版 (LOT-R) 的心理测量特性。

设计和主要结果测量

LOT-R 在五个临床样本、三个普通成人样本和一个青少年样本中进行管理。其中七项研究在德国进行，两项在哥伦比亚进行。所有样本量均在 300 以上。

结果

八个成人样本的 Cronbach α 系数介于 0.57 和 0.75 之间，量表乐观和悲观之间的相关性范围为 -.05 至 -.37，量表的时间稳定性系数（重测相关性）范围为从 0.43 到 0.69。在九项研究中没有观察到系统的年龄和性别影响。虽然验证性因子分析的单因子模型显示所有样本之间的拟合指数明显不足，但双因子模型拟合明显更好。

结论

LOT-R 被证明是衡量患者和一般人群性格乐观的合适工具，但应谨慎看待总分。比较不同样本的 LOT-R 平均分数的研究不需要考虑年龄和性别分布。