Schmidt Frank L, Le Huy, Ilies Remus
Department of Management and Organizations, Henry B Tippie College of Business, University of Iowa, Iowa City 52242, USA.
Psychol Methods. 2003 Jun;8(2):206-24. doi: 10.1037/1082-989x.8.2.206.
On the basis of an empirical study of measures of constructs from the cognitive domain, the personality domain, and the domain of affective traits, the authors of this study examine the implications of transient measurement error for the measurement of frequently studied individual differences variables. The authors clarify relevant reliability concepts as they relate to transient error and present a procedure for estimating the coefficient of equivalence and stability (L. J. Cronbach, 1947), the only classical reliability coefficient that assesses all 3 major sources of measurement error (random response, transient, and specific factor errors). The authors conclude that transient error exists in all 3 trait domains and is especially large in the domain of affective traits. Their findings indicate that the nearly universal use of the coefficient of equivalence (Cronbach's alpha; L. J. Cronbach, 1951), which fails to assess transient error, leads to overestimates of reliability and undercorrections for biases due to measurement error.
基于对认知领域、人格领域和情感特质领域构念测量的实证研究，本研究的作者考察了瞬时测量误差对经常研究的个体差异变量测量的影响。作者阐明了与瞬时误差相关的可靠性概念，并提出了一种估计等价性和稳定性系数（L. J. 克龙巴赫，1947年）的程序，这是唯一评估所有三种主要测量误差来源（随机反应、瞬时误差和特定因素误差）的经典可靠性系数。作者得出结论，瞬时误差存在于所有三个特质领域，在情感特质领域尤为显著。他们的研究结果表明，几乎普遍使用的等价性系数（克龙巴赫α系数；L. J. 克龙巴赫，1951年）未能评估瞬时误差，导致对可靠性的高估以及对测量误差偏差的校正不足。
