A validation of the revised circadian type inventory in a working sample
A validation of the revised circadian type inventory in a working sample
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DOI：
10.1016/j.paid.2005.04.012
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发表时间：
2005-11-01
影响因子：
4.3
通讯作者：
Folkard, S
中科院分区：
文献类型：
--
作者：
Di Milia, L;Smith, PA;Folkard, S
以倒班工人和日班工人为研究对象，对两因素11项昼夜节律类型量表的测量特性和结构效度进行了检验。这两个因素解释了50.04%的方差（LV = 20.24%, FR = 29.80%）。项目间相关均显著，项目-总量相关表明LV量表中有一个项目存在弱点。Cronbach’s alpha分别为0.72 （LV）和0.79 （FR）。然而，验证性因子分析为假设的结构提供了边际支持。在一天中，精力充沛的人明显比懒散的人更警觉，这表明他们在醒来时受到睡眠惯性的影响更小。据报道，精力充沛的人需要的睡眠也明显更少。在16:00和22:00之间，柔性型和刚性型的警觉性存在显著差异，这表明柔性型在这段时间内受昼夜节律和清醒因素的影响较小。与僵硬型的人相比，灵活型的人睡眠需求也明显减少。研究结果表明，精力充沛、灵活的人最能适应轮班工作。结果表明，该方法具有良好的信度和效度。对今后的研究提出了建议。(c) 2005年Elsevier Ltd出版
The measurement properties and construct validity of the two-factor 11-item Circadian Type Inventory (CTI) was examined in a working sample comprising shiftworkers and day workers. The two factors explained 50.04% of the variance (LV = 20.24% and FR = 29.80%). Inter-item correlations were all significant and the item-total correlations suggested the weakness of one item in the LV scale. Cronbach's alpha was 0.72 (LV) and 0.79 (FR). Confirmatory factor analysis however provided marginal support for the posited structure. Vigorous types were significantly more alert than languid types across the day and suggested they are less influenced by sleep inertia on waking. Vigorous types also reported needing significantly less sleep. Significant differences in alertness between flexible and rigid types were found between 16:00 and 22:00 and suggested flexible types are less influenced by circadian and wakefulness factors during these periods. Flexible types also reported significantly less sleep need compared to rigid types. The findings suggested vigorous and flexible types would best cope with shiftwork. It is concluded that the CTI demonstrated good reliability and validity in a working sample. Recommendations for future studies are made. (c) 2005 Published by Elsevier Ltd.